Proceedings of the Royal Society. 263 



stracted cither through an incision on one side of the abdomen, 

 or, as in the present mummy, througli the anus. The thoracic 

 cavity was not disturbed. That the contents of the cranium were 

 removed ; sometimes through the nostrils, and in others through 

 one of the orbits. The body was then probably covered with 

 quick- lime to facilitate the removal of the cuticle ; the scalp and 

 nails being however left untouched ; after which it was immersed 

 in a melted mixture of wax, resin, and bitumen, until thoroughly 

 penetrated ; and, ultimately, subjected to a tanning liquor, pro- 

 bably made with the saline water of the neighbouring natron 

 lakes ; the bandages were then applied, with the occasional inter- 

 position of melted resin, or wax and resin, the lumps of resin, 

 myrrh, (Jr., having been previously placed in the abdomen. 



M. Gay-Lussac took his seat, as a foreign member of the Royal 

 Society. 

 Henry Harvey, Esq., was admitted a Fellow of the Society. 



May 5.— Dr. H. H. Southey was admitted a Fellow of the 

 Society. 



May 12. — John Taylor, Esq., was admitted a Fellow of fKe 

 Royal Society, and a paper was communicated by Peter Barlow, 

 Esq.^F.R.S., On the Magnetism imparted to Iron Bodies by Rotation, 



The author's attention having been recalled to fhe considera- 

 tion of the effects of rotation in altering the magnetic influence of 

 iron, in the course of speculations on the cause of the rotation of 

 the earth's magnetic poles, and knowing at the same time that 

 Mr. Christie had found a permanent change in the magnetic state 

 of an irK)n plate by a mere change of position on its axis, it seemed 

 to him highly probable that this change, due only to a simple in- 

 version would be increased by rapid rotation. On trial, however, 

 it was found that the effect produced was merely temporary. The 

 experiments at first were made with a thirteen inch mcrtar-ghell 

 fixed to the mandril of a powerful turning lathe, worked by a steam 

 engine in the Royal Arsenal at Woolwich. 



