ACCOUNTS, &C., OF THE BRITISH MUSEUM. 37 



Works of the Department. 



The work of the Department consists chiefly in examining, determinino-, naming, and 

 arranging the Fossils, and in entering the newly-acquired specimens in the Inventory, 

 Of the new acquisitions, the most interesting objects are exhibited as soon as possible, 

 and to gain the necessary space for this purpose, extensive changes in the arrangement of 

 the specimens already exposed in the cases are often required. 



Koom I. Numerous plant-remains (chiefly Ferns) from the Coal-measures of Rhymney, 

 South Wales, and two large trunks of Sigillariu, also from the Coal-measures, have been 

 exhibited for the first time. 



Room II. The Fish-remains, in the Wall- cases, Nos. 1, 5, and 6, have been entirely 

 re-arranged, and newly- acquired specimens incorporated. The Chimeroid fishes have 

 been re-mounted and re-arranged (with additional specimens) in a Table-case in this room. 



Room III. Additional specimens of Pterodactyle remains, from the Lias of Lyme- 

 Regis, have been incorporated in case No. 1. 'I'he Chelonian remains in case 3, have 

 been partially re-arranged, and a fine Turtle, from Swanage, showing both the carapace 

 and plastron, has been added to the series. In case 8, containing the remains of the large 

 Dinosaurian reptiles, some new forms of vertebras have been added. 



Room IV. The whole of the specimens of Ichthyosaurian reptiles exhibited in this 

 room have been cleaned, and the smaller specimens have been re-arranged, with additions. 



Room V. The Wall-cases, Nos. 1 to 5 inclusive, have been re-arranged, and additional 

 specimens have been incorporated. 



Room VI. The most important addition to the specimens exhibited in this room, is a 

 very choice series of Trilobites, arranged in Table-case 9. 



Unexhibiied Specimens. 



Of the unexhibited specimens, the whole of the Fish-remains have been collected 

 together, grouped Geologically, and arranged in the drawers of the Table-cases of Room II., 

 and an inventory has been made of the collection. 



The Crag Fossils have also been collected together, and arc arranged in drawers in 

 Room VI. 



The Collection of the late Dr. William Smith, has been re- arranged. 



Considerable progress has been made in the re-arrangement of the Fossil Invertebrata 

 generally, and an inventory of the same is in progress. 



The large Chelonian remains from Maestricht, and a series of Reptilian remains from 

 the Coal-measures of Ireland, have been mounted and displayed in a room in the Base- 

 ment-floor. 



Specimens registered during the year : — 



Vertehrata : 



Mammalia - - 1,360 



Aves -------- 8 



Reptilia ------- 54 



Pisces - 200 



1,622 



Invertebrata: 



Mollusca 33,888 



Echinodermata ------ 36 



Protozoa and Rhizopoda - - - 109 



Zoophyta, &c. - - - - - - 374 



Polyzoa - - - - - - 603 



Annelida ------- 13 



Crustacea - - - - - - 314 



35,337 

 Plant Remains -- __- 27 27 



Total - - - - 36,986 



The number of visits from Students during the year is 417. 



Geo. JR. Waterhouse. 



188. E3 



