An introduction to our child mummy Tanwa

In my recent post about the Philadelphia Science Festival, I put in a little teaser photograph of one of our child mummies currently in the lab:

child mummy overallNow, all of our mummies are special, but this child mummy has several qualities that make her particularly endearing. One of the things that we really love is that her name is written on her wrappings, near her feet.

Child mummy detailHer name is actually written in both Greek and Demotic – Demotic is the language/script that developed in later periods in Egypt (and is one of the languages inscribed on the Rosetta Stone, along with Greek and hieroglyphic Egyptian). In Greek, this inscription reads: “Tanous (daughter of) Hermodorus”. In Demotic her name reads as “Tanwa”.

So, based on this inscription, we know that she dates to the Ptolemaic Period, and that she is a girl. According to our Egyptologists, what is interesting about the names is that they give a good indication of the multi-cultural nature of this time period. Not only in the fact that 2 languages are represented, but that the girl’s name incorporates the name of an Egyptian goddess, Iwnyt, while her father’s name includes the name of a Greek god, Hermes.

Tanwa has been CT-scanned, which has confirmed the fact that she is a girl, and was likely right around the age of 5 when she died.

Here is a still from the CT scan showing a detail of Tanus' skull. Based on her teeth it has been estimated that she was right around 5 years old when she died.

Here is a still from the CT scan showing a detail of Tanwa’s skull. Based on her teeth it has been estimated that she was about 5 years old when she died. That pin you can see near the top of her skull is modern and not actually in her skull-it was used to secure the outermost layers of linen in that area.

One of my favorite things that CT scanning has shown is that she is wearing 2 bracelets on her left wrist. We are guessing that these might be gold.

Two bangle bracelets on the left wrist show up clearly on the CT scan.

Two bangle bracelets on the left wrist show up clearly on the CT scan.

She also has a small metal ball included in her wrappings just over her right tibia. Exactly what this is and why it was placed there is a bit of a mystery.

A detail shot of the metal ball near her right tibia.

A detail shot of the metal ball near her right tibia.

There is a lot more we can learn from these CT scans, which I will describe in a future post.

Fortunately, Tanwa is in fairly good condition; one of the main issues that we need to address here in the conservation lab is that many of the narrow linen bands wrapped around her body are fragile, torn and partially detaching. I am currently more than halfway through the conservation treatment, and I will provide a thorough report on what we are doing to stabilize her wrappings next. Stay tuned!

 

Reimagining an ancient Egyptian material

Have you checked out our In the News section of this blog? Periodically, we try to update this page with some interesting articles related to our Egyptian collection, stories about projects and discoveries in Egypt, and even our own lab highlighted in the press.

One of the more recent stories that we’ve posted is about a new discovery related to Egyptian blue, one of the world’s first synthetic pigments. The ancient Egyptians made it by heating together copper, silica (sand), lime (calcium oxide) and an alkali such as natron (sodium sesquicarbonate) and it is found on objects from as early as the 4th Dynasty through to the Roman Period. We see this pigment on artifacts here in the lab, including Tawahibre’s coffin (and for more details read our blogpost on how we know this.)

A detail of Tawahibre's coffin. Based on analysis, this pigment has been determined to be Egyptian blue.

A detail of Tawahibre’s coffin. Based on analysis, this pigment has been determined to be Egyptian blue.

One thing that has been discovered about Egyptian blue is that it has luminescent properties-this luminescence cannot be seen in normal light conditions, but can be detected and recorded using a device that is sensitive to infrared light. This phenomenon is called visible-induced infrared luminescence. Using a regular (visible) light source and a modified digital camera, it is possible to not only positively identify Egyptian blue using a completely non-invasive technique, but it is also possible to discover very small traces of Egyptian blue pigment on surfaces of objects. The British Museum provides a great overview of this phenomenon on their website. It is our hope that we might be able to try this technique to examine some of the artifacts in our collection.

A painted wood uraeus on display in our Upper Egypt gallery. The paint has not been analyzed, but based on appearance the blue is most likely Egyptian blue. Examination with an IR source could confirm this.

A painted wood uraeus on display in our Upper Egypt gallery. The paint has not been analyzed, but based on appearance the blue is most likely Egyptian blue. Examination with an IR light source could confirm this.

Furthermore, it is now understood that this luminescence is produced by the nanostructure of the pigment – scientists have discovered that the calcium copper silicate in Egyptian blue can be broken into nanosheets, which produce infrared radiation similar to beams that communicate between TVs and remote controls and car door locks. It is now being envisioned that these nanosheets could be used for future near-infrared-based medical imaging techniques and security ink formulations!! Talk about a new life for such an ancient material.

You can read and hear more about this by following this link to our In the News section of this blog. Have you read or heard about something recently that you think we should share on our blog? Leave a comment here and we’ll try to incorporate these suggestions whenever possible.