From the Archives

BY SEBASTIAN ENCINA, Museum Collections Manager, Kelsey Museum of Archaeology

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Istanbul is a beautiful city. For the readers who have had the pleasure of visiting this majestic city, you will know the wonders to be found around each corner. The Hagia Sophia standing iconically in Sultanahmet, not far from the Blue Mosque. In between a park where people gather at all times of day, but that comes to life at night. The area of Sultanahmet, though touristy, is ripe with colours and glamorous views from atop hotels that look out over the Bosphorus.

A few minutes away one can get lost in the Grand Bazaar. Various corridors will take the visitor to shops of all kinds. If you need a souvenir, you can find it in the bazaar. Fresh fruits, fish and meats, nuts, spices, including Iranian saffron, are all there for the picking. Jewelry and household adornments. Clothing and housewares. An ornate tea set that would look great in your parent’s house. Hours later, you might still find yourself going down paths that are new to you, and keep finding new goods you cannot live without. The shopkeepers eager to encourage you to buy.

Walk long enough in the bazaar and you might come to an exit eventually. Though you entered coming from Sultanahmet, you find a new exit. This one brings you directly to the Bosphorus and the Galata Bridge. There is still much to see on the old side of the city, but you wander onto the bridge. Here, along the lower level, you can stop for lunch at one of the numerous restaurants clamoring for your patronage. Enjoy the fish coming off the boats and wash it down with the local brew, Efes.

From here, you can continue to the new side of the city, where modern shops with brand names litter Istiklal Street. You see more cafes, where artists gather to talk the hot topic. Restaurants and food vendors are found on every corner, and between. The Galata Tower towering over this area, and the steep steps leading you up to get a good view. Turn around, or climb the tower (which has a restaurant), and glance again at the Bosphorus and the old city. The minarets sprinkling the city from end to end. You see the bazaar waiting to greet you again. Maybe you continue to Taksim Square, or visit Galatasaray Lisesi, the high school on Istiklal. Or you do some shopping.

Eventually you return to Galata Bridge, but rather than head back into the old city, you take a ferry tour of the Bosphorus. A tour guide pointing out the famous buildings in landmarks, as you relax on the gentle waters. When done, you head back to Sultanahmet and you see a gathering of people. What is this, you wonder, and you come close to an outdoor theatre where whirling dervish dancers perform. They spin to the music, and you find yourself lost in the motion.

Nearby, as it is dark, you see families out playing with light toys that shoot up in the sky. Street vendors sell corn and other treats. Others, including locals and tourists, duck into hookah lounges, where they enjoy some chai and flavored shisha.

There is much to this city, and Francis Kelsey and George Swain found something quite similar when they visited. Back then, the city was still known as Constantinople, though in his photos, Swain refers to a “Stamboul.” The city has changed much since the 1920s. A comparison of photos shows the spread of buildings and new construction found everywhere. Still, locals will look over these photos and see much they recognize. And they speak to the changes to modern times. The photos Swain took are, quite literally, a snapshot of a bygone time, but one not that long ago.

 
Istanbul has been an important city for a long time. It is where Asia meets Europe. Much trade goes through this city, as it also controls access to the Black Sea. It is no wonder that Kelsey visited many times on his way back and forth between North Africa and Europe, with stops in Palestine and Syria. And many present-day Kelsey archaeologists go through Istanbul on their way to Notion, or Aphrodisias, or any number of sites where Michigan has a presence. Istanbul is a magical city, one highly recommended to visit. It is full of life and beautiful scenes. Nothing can detract from this.

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Low-tech adhesive testing for Egyptian polychrome limestone

BY CAROLINE ROBERTS, Conservator, Kelsey Museum of Archaeology

One of my favorite conservation activities is researching practical solutions to complex condition problems. Example problem: how to stabilize flaky, powdery paint on deteriorating Egyptian limestone artifacts. The solution? Some kind of adhesive. But which kind would work best in an outdoor environment on salt-laden painted stone?

To figure this out I took a look at published information on the treatment of painted Egyptian limestone sculpture and wall paintings. There’s a lot of information out there on this topic, and I wanted to see for myself how some of the adhesives tested by conservators and scientists performed on a painted, salty limestone surface. The Kelsey conservation lab has limited equipment for this type of research, although we often partner up with labs that do (check back with the Kelsey blog for an upcoming post on our collaboration with UM’s Aerospace Engineering Department). One thing I could do in-house was to create mockups of the problem surface to approximate how each adhesive might perform in situ.

 

Creating mockups that accurately represent the materials and conditions of an ancient paint surface required some creativity. I used travertine tiles as a base, and soaked half of them in a solution of sodium chloride, or halite. This type of salt is present in much of the soil in Egypt, and has been shown to have an impact on adhesive performance. Stone was often covered with a ‘preparation’ layer (or layers) of plaster before paint was applied, so I applied Plaster of Paris to each tile. I then applied a layer of red ochre in gum Arabic – a plant-derived binder used in ancient Egyptian wall painting – with a high pigment-to-gum ratio representing the often diminished state of ancient binders on polychrome limestone. A section of each material – stone, plaster, and paint – was left visible on each mockup.

I applied five different adhesives to the tiles, leaving a number of them untreated as a control. I recorded their working properties, absorption, and resulting color changes, and then placed them outside to see how the adhesives fare in an exposed environment on both salty and un-salty mockups. From this low-tech experiment I hope to determine, from a practical angle, which adhesive to use on artifacts both at the Kelsey Museum and in field settings.

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Ugly Object of the Month – July

BY SUZANNE DAVIS, Curator for Conservation, Kelsey Museum of Archaeology

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Lamp. Clay and glaze. Roman, from Cologne. 2 nd – 4 th C AD. KM 1698.

It’s Halloween in July! This special Kelsey object is ugly AND spooky. It’s a ceramic lamp with the top molded to look like an actor’s mask. I don’t have much more to say about this – it’s just creepy and cool.  Can you imagine how it would look with a burning wick sticking out of the mouth?

This lamp was off view for several months while we hosted the special exhibition Leisure and Luxury in the Age of Nero, but now you can see it again! And you should! It’s so small that it’s easy to overlook, so make a special effort to find it. It’s worth it. It’s on the second floor in the “Gaul” case, in the gallery that explores the Roman provinces. See the map below.

Last but not least – thanks to our devoted reader Kate Larson, at the Corning Museum of Glass – we discovered that Ugly Object of the Month has a cousin on the University College London Museums and Collections Blog: Underwhelming Fossil Fish of the Month! While you’re over there looking at the fossily fish, you can also check out some great conservation posts, many written by my grad school pal Susi Pancaldo. Enjoy!

 

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From the Archives

Apologies for the tardiness of this post…

BY SEBASTIAN ENCINA, Museum Collections Manager, Kelsey Museum of Archaeology

Though the summer months see a drop in University class visits to the Kelsey, the Museum is by no means less busy when classes are not in session. Researchers who are students and professors here at Michigan, or at other universities around the world, take a break from their teaching responsibilities and make their way to the field and museums to continue their research. The Kelsey hosts a fair number of these scholars. Projects we did not have time for during the academic year are saved for the slower summer months.

As to be expected, the site of Karanis garners much attention from researchers. Every year we have numerous people come to study our collections on this Graeco-Roman site, or the archives that still contain a depth of information waiting to be revealed. This summer is no different, as Karanis has been the focus of an ongoing trial investigation by a group of Michigan scholars. Headed by Dr. Arthur Verhoogt (Classics) and Dr. David Stone (Kelsey Museum), a team has been assembled to determine what it would take to finally digitize, in a controlled and consistent manner, the entirety of Karanis holdings. This includes all the artifacts excavated at Karanis and brought to Michigan, but also all the maps, and archives, and photographs. Over the years, we’ve digitized some of the items, but only specific ones and only as requested.

This team, which also included graduate students Alexandra Creola (IPCAA), Caitlin Clerkin (IPCAA), and Lizzie Nabney (Classics), undergraduate students Emily Lime (Classics) and Mollie Fox (History of Art), professors Brendan Haug (Classics) and Laura Motta (Kelsey Museum), staff Sebastian Encina (Kelsey Museum) and Monica Tsuneishi (Papyrology), has decided to approach the site in a new manner. Previous research and publications have focused on material types. We have publications on the coins of Karanis, or the pottery, or papyrus. Instead, Drs. Stone and Verhoogt want to look at the context of the finds. How did the papyrus relate to coins found within the same space? What does a figurine found alongside a spindle whorl tell us about the inhabitants of house C56?

Over the past two months, students Mollie and Emily have been busy finding, cataloguing, and digitizing items from two contexts, C65 and C137. The team decided to focus on these two structures as they seemed of great interest due to their contents, and also because for a two-month trial project, looking at anything more would have been impossible. Mollie and Emily spent time going through the archives and identifying materials that related to these two structures (one house and one granary). They were then pulled, entered into a project-specific database, and eventually scanned or photographed. Among these was a 32-foot long map that showed a cross section of Karanis which we are excited to finally have scanned!

The project was generously supported by the Michigan Humanities Collaboratory, an endeavor funded by the Office of the Provost that seeks to bring together people from separate departments to work together towards a single goal. Several projects were funded for this summer term, including this Kelsey-Classic-Papyrology project. We hope to turn this trial period into a much bigger one, where the entirety of Karanis materials are digitized and made available to researchers freely. By doing so, researchers can approach the materials in their own way, without hindrance. At the conclusion of the two year project, we will have a better understanding on what we have here in Ann Arbor, a web portal will be in place for ease of research, and there may be publications and an exhibition. While students continue to digitize and catalogue, graduate students and faculty will analyze the materials to make better sense of the spaces and what is possible with what we have on hand.

While it is easy to get excited about what the future will hold, there is equal buzz about what has been found already. Mollie and Emily have scanned the 32-foot map, which is amazing, but they have also found photographs and archival materials we have not seen since the 1930s. There has been closer inspection into the artifacts, what they tell us about the citizens of Karanis, and the decorations found on objects and on walls. A sample of these is shared here, so that we can look anew at a place we members of the Kelsey community know so well, yet we continue to find new ways to see it.

 

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This summer has proven to be busy in the Kelsey Registry. This project has meant a steady stream of people in the office every day. Every computer is occupied, every free space taken up by archives or artifacts. But this busy-ness has generated an energy and excitement about what we can do with Karanis. There are endless possibilities, and we will keep busy this summer thinking about those and working to make them a reality.

Check out the Karanis Collaboratory website for more information about the project: http://sites.lsa.umich.edu/karanis-collaboratory/

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Ugly Object of the Month – June

BY CAROLINE ROBERTS, Conservator, Kelsey Museum of Archaeology

This month’s ugly object, a blown glass vessel from the Fayoum region of Egypt, wasn’t meant to be ugly. If you look past its flaws, you’ll notice the vessel’s attractive shape and the carefully applied strand of glass that spirals around its neck. It actually could have been quite pretty, had not an unfortunate accident befallen it during manufacture.

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Glass vessel KM 5073, from the Fayoum

 

I can imagine the moment when it happened: the glassmaker had just transferred the vessel onto a pontil (the metal rod used to shape the glass) and was working on finishing the neck. Somewhere in the transfer, or in the process of wrapping the strand of glass around the neck, the glassmaker’s sleeve or glove might have grazed the surface of the vessel, sticking to the soft, semi-molten glass and tugging it out of plane. The moment is captured in the twisted, pinched deformity that marks the vessel still. This vessel isn’t alone – the Kelsey is home to a number of flawed glass vessels. Together they give an impression of the speed of manufacture that produced thousands of objects like these. A mistake or two would probably have been considered run-of-the-mill.

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This vessel, and its flawed friends, will be featured in Carla Sinopoli’s upcoming exhibition Less Than Perfect, opening at the Kelsey Museum on August 26. Be sure to pay them a visit!

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From the Archives

BY MELISSA SOMERO, Graduate Intern in Kelsey Museum Registry

Hiding out in the Kelsey Museum Archives for the past semester I have come to appreciate the variety of documents that are housed there, such as those pertaining to the history of the museum, including Francis Kelsey and his expeditions, as well as excavations carried out by the University of Michigan. Perhaps some of the most interesting finds were the many photographs by George Swain documenting Francis Kelsey’s expedition to Europe, Near East and Africa from 1919-1920. Kelsey’s expedition was documented by the “Dangerous Archaeology” exhibition which also chronicled the history of archaeology in the Near East. It was from this collection of George Swain photographs I have chosen to highlight the photos from Syria. Swain gives us a rare glimpse into the lives of everyday people and refugees in the early part of the 20th century as well as beautiful archaeological sites.

 

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Aleppo, January 9, 1920: “Friday bazaar. Part of the crowd that gathered around the car.” (KS089.02)

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Aleppo, January 9, 1920: “Friday bazaar. Copper utensils in the foreground. Then the crowd, with some of the citadel in the distance.” (KS087.02)

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Aleppo, January 7, 1920: “Line-up at the entrance to the A.C.R.N.E. eye hospital, on the sidewalk. Dr. Tenner at right of door in back row at the left — man with moustache.” (7.0193)

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Aleppo, January 7, 1920: “The exterior of the inner entrance to the citadel, with a part of the inclined bridge over the moat.” (KS079.01)

 

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Aleppo, January 8, 1920: “View of Aleppo from the roof of the Hotel Casino, the headquarters of the A.C.R.N.E. (later, Near East Relief). The railway station and modern part of the city are at left. OId part of the city at the right, and beyond this the rise of the Citadel. The low building in the left distance is a barrack. Note that house roofs are built nearly flat so as to collect rain water. A stream, not shown here, runs through the town from right to left. Size, 9 1/2 x 24 in.” (Cirkut005)

 

The panoramic photograph is from a collection of Cirkut photographs in the Kelsey Archives, some of which are on display in the main entrance to the Museum. In Aleppo, the Citadel, which dates back to the 13th century, rises above the city and remains a testament to the ingenuity and prowess of ancient civilizations but is also a reminder of nations at war with its impenetrable walls. The Ancient City of Aleppo and its Citadel are now a UNESCO (United Nations Educational, Scientific and Cultural Organization) World Heritage Site, it is through this international body, which seeks to promote awareness and protection of important cultural sites, that many other sites have been saved and began to promote a thriving economy to the area.

 

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Aleppo, January 8, 1920: “Aleppo and its Citadel, seen from the roof of the Hotel Casino, A.C.R.N.E. headquarters.” (7.0203)

 

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Aleppo, January 7, 1920: “Citadel, a nearer view of the moat and entrance bridge.” (KS080.05)

 

Although for many archaeology in the early 20th century stemmed from the desire to seek out objects for personal glorification, it is clear that Kelsey began a career in the field for educational and humanitarian purposes. Kelsey was not only an explorer and archaeologist but was also involved with the Red Cross and his foray into Syria is documented by the many photographs taken of refugees of the Armenian Genocide.

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Aleppo, January 7-9, 1920: “Some of the 1500 orphans in the Armenian orphanage. Taken in the courtyard.” (7.0198)

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Aleppo, January 8, 1920: “The driver Zacke, two views, front and profile. Ethnic types. This is the driver that took us to Aintab, and who six weeks later, with Mr. Perry, was killed on the road.” (7.0202)

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Aleppo, January 7, 1920: “Armenian housekeeper. Two view, face and profile . Ethnic types.” (7.0200)

 

Because of people like Kelsey, the field of archaeology has not only introduced people to new cultures but has created a thriving enterprise that seeks to unite us in our common heritage. Along with the help of photographers like George Swain we may not only see the stoic archaeological remnants of past cultures but see the living ones that surround and add value to the ancient.

 

Lastly I leave you with the images of the ruins of Baalbek which can attest to the grandeur of the structure and the beauty of the intricate design. It is clear from these images that there was a thriving artistic community which is indicative of a prosperous society.

 

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Baalbek, January 13, 1920: “General entrance to Propylaea and present entrance to ruins. Mrs. Kelsey and Mrs. Norton near top of steps. Ancient steps to Propylaea missing.” (7.0212)

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Baalbek, January 13, 1920: “Corinthian Columns, Temple of Bacchus.” (7.0218)

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Baalbek, January 13, 1920: “Great portal, entrance to the Temple of Bacchus. Note the keystone of the flat arch of the lintel. Now held securely in position.” (7.0221)

 

Guest contributor Melissa Somero is a graduate intern this semester for the Kelsey Museum Registry. She earned her Master’s degree from Eastern Michigan University in Historic Preservation. While Melissa has assisted with multiple projects, her focus for the term has been the Kelsey Archives.

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Unwrapping the Karanis Dolls with Micro-CT Scanning

BY CAROLINE ROBERTS, Conservator, Kelsey Museum of Archaeology and             JANELLE BATKIN-HALL, Graduate Intern in Conservation

Janelle Batkin-Hall, graduate intern in the Kelsey conservation lab, has been taking a closer look at the Kelsey Museum’s collection of dolls from the Romano-Egyptian city of Karanis. The dolls vary in type, but many consist of fabric bundles, some of which are wrapped around small rocks or shaped bone.  Her research is to determine what the dolls are made of and what they were used for. To answer these questions, Janelle has examined the dolls using different forms of imaging, including micro-CT scanning, a technique used by scientists Basma Khoury and Dr. Ken Kozloff in the University of Michigan Orthopaedic Research Laboratories.

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Image 1: Janelle and Basma load the micro-CT unit

 

Ms.  Khoury and Dr. Kozloff visited the Kelsey Museum to take a look at the dolls and determine if they would fit in the micro-CT scanner. The micro-CT is normally used to study small mammals, and luckily the dolls Janelle wanted to examine were roughly the same size. Janelle and the Kelsey’s head of conservation Suzanne Davis transported two of the dolls to the A. Alfred Taubman Biomedical Science Research Building, where Ms. Khoury scanned each artifact for over two hours.

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Image 2: Doll in micro-CT unit

 

Doll 1966.901.0113 is made of what appears to be a polished piece of bone inscribed with eyes and eyebrows and wrapped in linen. Dyed animal fiber is attached to the top of the bone piece.  Janelle was interested in visualizing the piece of bone, since most of it is obscured by the linen. Ms. Khoury captured images of the surface of the bone and a number of inscribed lines that are normally obscured by the doll’s linen wrappings.  She also observed that the bone piece lacked the microarchitecture of bone, and is rather some other kind of material – possibly wood.

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Image 3: Micro-CT scan of shoulder

 

We’d like to thank Basma Khoury and Ken Kozloff in the Orthopaedic Surgery and Research Departments, as well as Suzanne Davis and Terry Wilfong for their help in facilitating this project.

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Ugly Object of the Month – May

BY SUZANNE DAVIS, Curator for Conservation, Kelsey Museum of Archaeology

This month’s ugly object, a flute, is in honor of my mother, who is a lifelong flute player. May is her birthday month, and she has been playing the flute (and piccolo) for approximately sixty years this month.

Flutes are some of the very earliest musical instruments, and the Kelsey has several. This one is made of bone and it would have been played by blowing into the end. It was discovered in 1929 in a temple at Karanis, Egypt.

 

 

It is obviously not fancy, but it’s nice to think about people enjoying the music it made so long ago. You can see it on the first floor of the Kelsey Museum, in the case devoted to University of Michigan excavations (see the map below). It can be found in the bottom drawer of that case.  If flutes are your thing, you can see another one in the Karanis House area (Graeco-Roman Egypt Gallery) by exploring the drawers.

 

map with flute

 

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From the Archives

BY SEBASTIAN ENCINA, Museum Collections Manager, Kelsey Museum of Archaeology

In a little less than a month, the Kelsey’s latest exhibition, Leisure & Luxury in the Age of Nero: the Villas of Oplontis Near Pompeii, will, sadly, come down for good. This was the Kelsey’s most grandiose exhibition to date, the culmination of several year’s work and planning. For this exhibit, the Museum borrowed just over 230 artifacts from the ancient villas at Oplontis, many of them out of Italy for the first time ever, only a few ever even exhibited previously. This endeavor was a major undertaking by the Kelsey, spearheaded by curator Elaine Gazda, with the assistance of many staff. Reactions have been overwhelmingly positive and reassuring that our efforts were well worth it.

The exhibition showcases beautiful artwork from Roman times when Vesuvius erupted in AD 79. These were covered in ash for nearly two millennia, awaiting discovery but perfectly preserving spectacular sculptures, frescoes, jewelry, and daily household objects. With this exhibition, Professor Gazda shows the contents from two villas, and what life was like at the time. Come mid-May, the exhibition will begin its journey to two different museums in the US, and with that these beautiful objects will be gone.

But friends of the Kelsey are well aware that once Oplontis leaves the Kelsey, we will still have beautiful artwork from Pompeii on display. The Barosso watercolors, the 1926 replicas of a room at the Villa of the Mysteries in Pompeii, are still visible in the Upjohn Exhibit Hall, in their own special room. These watercolors will be with us past the current exhibition, allowing visitors to gaze upon the level of craftsmanship not only of Maria Barosso, but of the original Roman artists as well. This space is a highlight of the collections, a must see for any visit to the Kelsey.

What some of our newer friends will not know is that the watercolors were not always on display in such a space. In fact, the artwork was rolled up and put away in storage for the majority of its life. In 1926, Maria Barosso painted these at the behest of Franics Kelsey. They were soon put on display in Italy under the auspices of Benito Mussolini, then rolled and shipped to Michigan where they lay dormant for over 70 years. Throughout its history, before the construction of the Upjohn Exhibit Hall and its opening in 2009, the Kelsey simply did not have the space to properly display these paintings. They were too large to display in the spaces of Newberry, and the building did not have the proper climate control and lighting to safely exhibit them. Instead, they were kept in a locked cabinet in collections storage where they teased potential use in an unknown future.

This month’s From the Archives reminds some of our longtime friends, and brings to light for our newer friends, an endeavor to have these out for view. In 2000, Professor Gazda curated the exhibition The Villa of the Mysteries in Pompeii: Ancient Ritual, Modern Muse. This was the Kelsey’s first successful attempt at having the watercolors out and visible, not just locked where no one could see them. However, even then the Kelsey was not able to show all the panels as they should be viewed. The temporary exhibition space, where the current gift shop is now located, was simply not large enough for all the panels. In order to do this, the Kelsey had to partner with the Museum of Art. This exhibition was a multi-venue show, with part on view at the Kelsey, including some complementary artifacts and the full-size mirror group panel, and the complete room on view at the Museum of Art.

The Kelsey archives do not only contain the history of the archaeological excavations and forays into Europe by Kelsey and Swain and friends, but we also maintain the history of the Museum into modern times. Every exhibition we have put on is carefully recorded, making it possible for us to learn from our past, see what we have done, how it was done. It is humbling to see where the Kelsey was just 16 years ago, and the limits we had to face. Despite these limitations, however, the staff and curators were able to overcome and do the best we could with the resources we had. Back then, we had no idea a space such as Upjohn would be coming to us, we could only hope.

The files in the exhibition archives contain old posters, flyers, photos, even layout designs. These are a few of the examples we present this month. And it acts as a reminder that even though Oplontis will soon be going away, we still have the beautiful Barosso watercolors to enjoy for many years to come.

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Analyzing Roman wall paintings

BY CAROLINE ROBERTS, Conservator, Kelsey Museum of Archaeology

When I think about color in antiquity, I like to imagine how colors have weathered, or changed chemically over time, and the ways these changes impact how we see ancient paint surfaces. Ancient paint can be found on terracotta figurines, marble sculpture, and – most visibly – on wall paintings. The Kelsey Museum preserves a number of Roman wall painting fragments, and Curator and Professor Elaine Gazda has incorporated these artifacts into her history of art classes. One of Professor Gazda’s students, UM senior D’Arcy Cook, has taken on the challenge of identifying the pigments from a group of these wall painting fragments.

D’Arcy is a chemical engineering major who is interested in archaeological chemistry and conservation science. Her primary research question was whether pigments on the Kelsey wall painting fragments matched what she had learned to expect based on published literature. To answer this question D’Arcy used analytical techniques available in the Kelsey Conservation Laboratory and across campus. I felt this would be a great opportunity to learn more about artifacts in the Kelsey collection and to provide D’Arcy with experience analyzing ancient materials.

Using a scalpel, I removed milligram-sized samples of paint from the fragments. D’Arcy analyzed the samples using Fourier Transform Infrared Spectroscopy (FTIR), an analytical technique that identifies materials by detecting signals produced by their molecular bonds. Among other results, her analysis confirmed that Egyptian blue is present on one of the fragments – a pigment I also detected with a modified camera, and which we both observed using a polarized light microscope. Egyptian blue pigment was commonly used by the Romans on wall paintings and sculpture.

This project illustrates how technical research works best by incorporating multiple, cross-checking analytical techniques, and depends on scientists, art historians, and conservators to happen. Many thanks D’Arcy, to Elaine and the Kelsey curators, and to the UM Chemistry department and EMAL laboratory for their help with this research!

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Figure 1: Sampling photograph showing plaster and paint layers

 

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Figure 2: Visible (VIS), infrared reflected (IRR), infrared reflected false color (IRR-FC), and visible-induced infrared luminescence (VIL) images. The white luminescence in the VIL image shows the presence of Egyptian blue.

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