112 



lOcwt. each, had fallen. The statement at p. 96, in which I 

 am made to differ with Mr. Tiddeman as to the presence of 

 the pleistocene mammalia inside the cave is altogether 

 unfounded, and the inference that I "varied my description" 

 after my paper came before the Society is negatived by the 

 fact that the abstract in question was printed for private 

 circulation in 1872. The remains occur at the entrance and 

 extend both inside and outside the cave, as I pointed out 

 in my diagram. These are merely two out of many points 

 which have been raised, and which do not lead me to alter 

 my conviction that the stratum containing the mammalia is 

 of preglacial age, or to undertake any responsibility as to 

 the views which I have not advanced. Were I to discuss 

 all tlie points which have been raised, I should anticipate 

 the Report of the Committee to the British Association. If 

 these hasty and necessarily imperfect observations were not 

 calculated to throw discredit on the Exploration, I should 

 not trouble the Society with this note. 



" On some Improvements in Electro-Magnetic Induction 

 Machines," by Henry Wilde, Esq. 



[An abstract of this paper will appear in the next number 

 of the Proceedings.] 



MICROSCOPICAL AND NATURAL HISTORY SECTION. 



Extraordinary Meeting, December 11th, 1872. 



Joseph Sidebotham, F.R.A.S., in the Chair. 



Mr. James M. Spence exhibited a large and interesting 

 collection of natural history and other objects from Vene- 

 zuela. Mr. Spence had lately returned from that country, 

 in which he spent eighteen montlis, during which time he 

 accumulated a very extensive collection. 



The natural history collection contained a number of 

 hunters' skins of the larger animals of prey and of the chase ; 

 but the great wealth and beauty of the fauna of the country 

 was best illustrated by the extensive collection of birds. 



