146 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



A series of limb-bones of Diprotodon, from South Aus- 

 tralia, has been prepared and hardened for mounting. 



The large specimen of Ichthyosaurus platyodon, from the 

 Lower Lias of Stockton, has been repaired, and decaying 

 pyrites has been removed from the rock. 



Plesiosaurian remains and two Crocodilian skulls, from 

 the Oxford Clay of Peterborough have been prepared for 

 exhibition. 



A skeleton of Pteranodon, from the Chalk of Kansas, has 

 been prepared and hardened. 



Numerous repairs were done to the various parts of the 

 plaster cast of Diplodocus carnegii. 



A large specimen of the branchial arches of Leedsia pro- 

 hlematica, from the Oxford Clay of Peterborough, has been 

 prepared for study and exhibition. 



Fishes from the Chalk of Kansas have been prepared and 

 fixed in frames. A few fishes from the English Chalk have 

 also been prepared. 



The plaster cast of the gigantic Ammonite (Pachy discus) 

 has been fixed to the end wall of Gallery 7. 



Numerous specimens have been reduced and prepared 

 before incorporation in the collection, notably Fishes, 

 Crustacea, and Cephalopoda. 



Some large specimens of Carboniferous Plants, including 

 the stem of Sigillaria, have been prepared for exhibition. 



Six blocks of Magnesian Limestone have been trimmed 

 and prepared for exhibition. 



Numerous moulds and plaster casts of fossils have been 

 made, including a series of coloured casts for presentation to 

 the Carnegie Museum, Pittsburg. 



The Mason has also made a few plaster casts of fishes and 

 Amphibians for the Department of Zoology. 



III. — Printing of Labels. 



The Museum Printer continues to devote one day each 

 week to the preparation of labels for the Department of 

 Geology ; but a Boy Attendant in the Department composes 

 and prints most of the labels, and has this year prepared 

 upwards of 727 (and 9,286 prints of these). 



IV. — Exchanges and Duplicates. 



Exchanges of plaster casts and duplicate fossils have been 

 made with the following institutions : — Royal Scottish 

 Museum, Edinburgh ; Geological Museum, University of 

 Leyden ; and the American Museum of Natural History, New 

 York. An exchange of Jurassic Gastropoda was also made 

 with Mr. L. Eichardson. 



