Reports from the Environmental Unit, York 94/38, 3 pp.

A preliminary assessment of the preserved human brain tissue from Magistrates Court, Hull.

by

Dr Keith Dobney and Don Brothwell

Summary

Several fragments of well preserved human brain were recovered from a medieval skeleton at the Magistrates Court site, Hull. Although of limited value in providing detailed information about the medieval friars of Hull, it provides an almost unique opportunity to address, in detail, questions regarding the preservation of soft tissue. Histological, chemical and biomolecular studies are recommended although these need to be co-ordinated. The possibility of uncovering more during the course of excavation should be borne in mind.

Authors' address: Prepared for:

Environmental Archaeology Unit Humberside Archaeology Unit Property Services Department Heslington Humberside County Council York YO1 5DD County Hall Beverley North Humberside HU17 9BA

Telephone: (0904) 433843-51 Fax: (0904) 433850 13 July 1994 Reports from the EAU, York 94/38, 3 pp. Preliminary assessment: human brain tissue from Magistrate's Court, Hull

A preliminary assessment of the preserved human brain tissue from Magistrates Court, Hull.

Introduction of Leeds medical school, St James Hospital who offered to carry out various analyses During excavation of medieval friars from such as C.T. scanning and histological work. the site of Magistrates Court in Hull, a This will involve pickling the two largest cranium was recovered which appeared to pieces in formaldehyde. These specimens contain several small pieces of possible are therefore now in Leeds. Several smaller organic matter. Although it was initially pieces were retained and frozen in the thought to be a cranial endocast, the EAU department of Biology, University of York, was contacted to provide some further to await further biomolecular analysis. insight. On closer inspection, during a site visit which took place on 06/07/94, Dr Keith Dobney confirmed it to be several fragments Implications of human brain. This identification was based on an extremely convoluted surface Finds of preserved human brains are (which would not occur if only an extremely rare and usually associated with endocranial cast), its almost rubber texture exceptional preservational regimes, for and the light grey-cream colour of its example the various 'bog bodies' from interior (viewed where small areas had been Britain and Denmark. Very few examples damaged). The two largest fragments from ordinary inhumations have been appeared, in fact, to represent entire but very documented, the only other from Britain shrunken lobes of the brain. being a Roman example from Droitwich, excavated in the 1950's. The most celebrated The specimens, along with the entire examples from Europe are those from the skeleton from which they were recovered, medieval cemetery at Dordrecht, were then removed to the York Netherlands, where several brains were Archaeological Trust Conservation preserved. Laboratory at the request of Sonia O'Connor. The fragments of brain tissue Analysis of the material is of intrinsic and were then taken to the University of York's specialist interest only and will tell us very Biology department where cold and freezing little regarding the individual or population facilities were made available. it represents. It is, however, extremely interesting in that it provides a rare Professor Don Brothwell of the Department opportunity to study the mechanisms of its of Archaeology University of York was remarkable preservation as outlined below: informed of its discovery and also confirmed the specimen to be almost 1. C.T. scanning and more conventional certainly preserved human brain. The human histological work will provide detailed bones specialists of the Calvin Wells information on the quality of the Laboratory, Department of Archaeological tissue and its internal architecture. Sciences, University of Bradford were then informed and they contacted Dr McLennan 2. Chemical analysis involving the study of

2 Reports from the EAU, York 94/38, 3 pp. Preliminary assessment: human brain tissue from Magistrate's Court, Hull

lipids and cholesterol may indicate Recommendations why it has preserved. It is recommended that all interested 3. The study of any preserved specialists are brought together to produce biomolecules will throw important an integrated research design detailing any light on the taphonomy of DNA. future work on this material. This would perhaps best be co-ordinated by Dr Simon Where rare states of preservation are Mays (AML), Professor Don Brothwell encountered, further detailed investigation is (University of York) and Dr Charlotte certainly worthwhile since additional Roberts (University of Bradford). genetic and immunological information may be recovered.

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