DEPARTMENT OF GEOLOGY. 183 



Number of specimens of Brachiopoda registered, 6,150. 



Polyzoa (Gallery 8 and Workroom). — Progress has been 

 made in mounting and registering Cretaceous Polyzoa as a 

 preliminary to cataloguing, notably recently acquired specimens 

 from Worms Heath, Surrey, from Cuckmere Haven and 

 Sompting, Sussex, and from Vendome, Loir-et-Cher. Such 

 Oribriline forms as are already mounted have been systemati- 

 cally arranged. 



Number of specimens of Polyzoa registered, 1,800. 



Anthozoa and Hydrozoa (Gallery 10). — The revision of the 

 Carboniferous Corals has been continued and nearly 350 speci- 

 mens have been cut, including many thin sections. Specimens 

 recently acquired from the Ordovician of France and Ayrshire, 

 from the Devonian of the Eifel, and from the Carboniferous of 

 Great Britain (Stanley Smith coll.) have been registered and 

 incorporated. 



Number of specimens of Anthozoa and Hydrozoa registered, 

 302. 



Porifera (Gallery 10). — Recently acquired specimens from 

 the Chalk of Worms Heath, Surrey, and Sompting, Sussex, 

 have been registered and incorporated. 



Number of specimens of Porifera registered, 71. 



Protozoa (Gallery 10). — Recently acquired Protozoa from 

 the Permian of Japan, the Senonian of Sussex and the Tertiary 

 of Spain, and specimens of the problematical group Archseo- 

 cyathinae from the Cambrian of Sardinia, have been registered 

 and incorporated. 



Number of specimens of Protozoa registered, 6. 



PlantcB (Gallery 10). — A new case has been arranged and 

 placed near the entrance of the Gallery to illustrate the various 

 modes of fossilisation of plants. 



The exhibited collection of Lower Carboniferous plants in 

 table-case 31 has been re-arranged and re-labelled. 



In connection with the Catalogue, progress has been made 

 with the revision of the Cretaceous plants, and numerous 

 microscope-sections of Cretaceous woods have been prepared. 



The unexhibited Tertiary plants from the Arctic regions 

 have been arranged and labelled in drawers, and progress has 

 also been made with the identification of other Tertiary 

 collections. 



A polished piece of the trunk of a silicified tree from the 

 "petrified forest" of Arizona, U.S.A., presented by C. Arthur 

 Pearson, Esq., has been placed on a special stand in the Central 

 Hall. 



Number of specimens of Plantse registered, 484 . 



Tracks and Rock- Specimens (Gallery 11). — A Paramoudra 

 from the Chalk of Antrim has been mounted with the speci- 

 mens from Norfolk and a Re ent sponge for comparison, 

 between wall-cases 1 and 2. 



