GEOLOGY. 



71 



Division F. Peotozoa. 



Class 1. Spongtda. 

 „ 2. Radiolaria. 

 ,, 3. foraminifera. 



The Fossil Sponges form a large and important group, and were 

 numerously represented in the Cretaceous and Oolitic rocks; the latter 

 being chiefly from foreign localities. 



The Radiolaria and Foraminifera are mostly microscopic organ- 

 isms ; but the latter, by their numbers, help to form large beds known 

 as " Nummulitic Limestone " of great thickness, and covering a vast 

 extent of mountainous country, from England to China. 



The Fossil Sponges are now being worked out in detail by Dr. G. 

 J. Hinde, F.G.S., and the Foraminifera have been carefully catalogued 

 by Prof. T. Rupert Jones, F.R.S. 



The Eastern side of this Gallery is intended for the reception of 

 the Fossil Plants, of which a very large collection exists. 



Further information regarding this Gallery will be supplied in a 

 later Edition of the Guide. 



Narrow Gallery No. 4. — This Gallery is not yet fitted up, but it is 

 intended to be cased along its Western side for a special Stratigra- 

 phical collection, aud on its Eastern side will serve to continue the 

 €xhibited series of remains of Fossil Reptilia. 



HENRY WOODWARD. 



