ACCOUNTS, &C., OF THE BRITISH MUSEUM. 69 



IV. — Work of the Blason-Formatore, Assistant Mason, §'c. 



A lai'ge series of thin sections of fossil wood, sponges, corals, foraminifera, also teeth 

 and bones of various animals, have been prepared and mounted upon glass so as to display 

 their minute structure under the microscope. 



Large sections of the corals themselves also of sponges, cephalopods, plants, &c. have 

 been cut and polished for exhibition in the collection. 



A series of large blocks of Triassic Sandstone from Elgin, containing remains of 

 Hyperodapedon, sent to the Museum by the Kev. Dr. Gordon, have been reduced by the 

 Assistant Mason, exposing the greater part of the skeleton of this reptile, including the 

 skull and lower jaw, which have been entirely developed from the matrix, showing both 

 upper and under surfaces. The skull of a nearly allied form, Rhijnchosaurus, from the 

 Trias of Grinsill, Shropshire has also been most successfully developed. 



Numerous detached bones of Iguanodun from Hastings, o\ Pohicanthus, from the Isle of 

 Wight, and of Ichthyosaurus, from the Lias of Lyme Regis, have been developed, repaired, 

 and added to the collection. 



The sacral shield and pelvis of FolucaJithus, built up from an immense number of frag- 

 ments, has been most successfully reconstructed, and a cast taken of its upper surface, so 

 tliat both the dorsal and ventral aspect of the great shield can be seen exhibited together 

 {see Wall-case 4. Reptilla). 



The remains of a second great horned reptile, allied to Megnlania, obtained by 

 Mr. Fitzgerald from Lord Howe Island, have been carefully Avorked out, revealing a 

 skull, vertebrae, and parts of caudal sheath. 



The recently purchased skeleton of Mylodon from South America is being carefully 

 repaired and put in oi'der, prior to its being set up for exhibition. 



A large slab of Lower Silurian Shale full of Trilobites (Asaphus Canadensis), from the 

 Oil region of Lake Huron, N. America, has been framed and glazed, and fixed up on the 

 east side of Gallery, No. 8. 



Two glazed cases of sponges have been fixed up on mahogany brackets against the 

 wall on the west side of Gallery, No. 9. 



The following casts have been prepared and mounted on stands and added to the 

 exhibition series. 



A cast of the hind-foot of Iguanodon Seelyi (copied from the original in Mr. J. W. 

 Hulkes' Collection). 



Cast of foot of Iguanodon Mantelli (from Mr. S. Beckles' Collection). 



A cast of the manus and pes of Iguanodon Bernissurtensis (from the Brussels Museum). 



A copy of the foot-print of Iguanodon, I'rom the Wealden. 



A cast of the sternum of Iguanodon (from the original in the collection of Mr. 

 S. H. Beckles, f.k.s.) 



Cast of ramus of jaw of Machcerodus, from the Norfolk Forest bed (from the original in 

 Mr. Backhouse's Collection). 



Casts of numerous earbones of whales, from the Crag of Suffolk (from the originals in 

 the Ipswich Museum). 



Casts of teeth of Mastodon Helladotherium and other type specimens (from the originals 

 in the Calcutta Museum). 



The usual regular work of developing, mending, and mounting of specimens of all kinds 

 needed for exhibition, has continued pari passu with the arrangement of the collection. 



V. — Acquisitions. 

 The principal additions to the Department during the past year are as follows : — 



1. By Donation. — A. Vert£BRAta. 



(1.) Mammalia. — A collection of fragmentary remains of Diprotodon, four portions of 

 bones of Nolotherium, one Mandibular ramus of P/iascolomys plutyrhinus, and one of 

 Piolemnodon Og., Owen (from Darling Downs, Queensland) ; presented by George 

 Bennett, Esq., m.d., &c. 



Fifty-four specimens, comprising, three imperfect skulls, a lower jaw, vertebrae, ribs, 

 and bones of the fore and hind-limb of Scelidotherium leptocepJiulum (from the Pampas 

 formation, T.imarugal, in Tarapaca, Peru, S. America) ; presented by Don Modesto 

 Basadre. 



A series of teeth and bones of Mammalia, from the caves of Billa Surgam. Karrail, 

 Madras, comprising, Semnopithecus, saccolcemus, Phyllorhinus, Herpestes, Hystiix, Lepus, 

 Nesokia, Sciurus, Sus, Cervus, and Bovine teeth ; also four plaster-casts consisting of 

 one tooth of Hycena, one of Viverra, mandible of Gynocephalus, and ungual bone of 

 Manis, from the same caves ; presented by H. B. Medlicott, Esq., M.A., F.R.S., Director 

 of the Geological Survey of India. 



Three milk-molars, and three true molars of Mastodon Cantleyi, and pcrimensis ; part of 

 a molar of Mastodon pandionis, a perfect tooth of Dinotheiium Indicum, and two jaws of 

 Sus hysudricus, all from Pei'im Island, Gulf of Cambay ; presented by Colonel J. W. 

 Watson. 



iJ<5. I 3 Portions 



