Sunday, 23 March 2014

8. An Evaluation of Past Theories on Egyptian Mummy Evisceration Techniques

In this blog post I will summarize and critique the information presented in Wade and Nelson’s (2013) paper on the ancient Egyptian evisceration techniques for mummification. In this study the authors looked at trends in mummification practices across the different Egyptian eras and compared with past historical accounts. They conducted a thorough analysis of published findings and computer tomography (CT) scans to reach their conclusions.
 The authors began with an account of past descriptions of the Egyptian mummification process. According to Wade and Nelson (2013), modern theories about the mummification process have been heavily reliant on the descriptions provided by the classical historians Herodotus and Diodorus Siculus. The removal of the organs (evisceration) as part of the mummification process was previously believed to have been done in one of three ways: transabdominal incision (via the abdomen), transperineal incision (via the perineum), or anal cedar oil injection (chemical evisceration via the anus). The removal of the brain (excerebation) and heart were also said to be important aspects of the evisceration process. Wade and Nelson decided to test the validity of the accounts by Herodotus and Diodorus Siculus and look at variation in evisceration methods across social, spatial, and temporal gradients. Wade and Nelson expected, based on the results of previous studies and the historical record, that abdominal evisceration would be much more common among the elite, that most commoners would have been eviscerated by the chemical method, and that the heart would be present in the vast majority of mummies dating to the Ptolemaic period (the era during which Herodotus and others described the process).

Canopic jars - These containers were used to hold the internal organs of the mummy following evisceration.
                  Wade and Nelson (2013) found that there was considerable variability in the evisceration methods used in across time periods and with individuals of differing social status. Rather than the expectations of evisceration by means of a chemical enema, the lower class Egyptians were commonly eviscerated through a slit in the abdomen. Among the upper class, abdominal evisceration was also equally common. They found that the only cases of evisceration through the perineal region were found among mummies of upper class individuals. The heart was found to be absent in most cases, particularly among more recent mummies (during the time that Herodotus and others supposedly described the evisceration process). This was another finding that was contrary to the previous evidence.  Overall, Wade and Nelson (2013) found that the historical descriptions of evisceration techniques in Ancient Egypt were vastly inaccurate.

Figure 2 from Wade and Nelson (2013) is a graphical representation of the changing frequencies in the retention of the heart following evisceration over time. The red striped bars represent the frequency of hearts retained, while the blue solid bars represent the frequency of hearts missing. The percentage denotes the proportion of hearts retained out of the total sample for that time period.


I found the paper to be very well-written and strongly supported by extensive research and thorough analytical techniques. I found it interesting how the authors pointed out some of the biases of the classical historical sources. As the Greek and Roman historians possessed an etic perspective, their descriptions were likely skewed by their own ideas about Egypt. They were not simply documenting what went on. Just as people in contemporary societies harbour stereotypes about people outside their own culture, these ancient historians also would have been highly subjective.

Wade, A.D., and Nelson, A.J. 2013. Radiological evaluation of the evisceration tradition in
ancient Egyptian mummies. HOMO - Journal of Comparative Human Biology. 64(1): 1-28.

Unknown author, “Canopic Jars,” photograph, http://students.greensboroday.org/~ravenscroftj/egypt/Dummy%20canopic%20jars%20of%20Padiouf.jpg

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