50 
EAST WING. 
Extinct The long gallery north of the mammalian saloon contains a 
Beptiles. assemblage of Eeptilian remains. The south side is devoted 
to the Great Sea-Lizards (Plesiosauria and Ichthyosauria), in- 
eluding the collection described and figured in Mr. Hawkins's- 
Book of the Great Sea-Dragons. Eanged in the cases on the 
north side are remains of the gigantic Dinosauria, which far 
exceeded in size any other land-animals. At the eastern end 
of the gallery are the Pterosauria, or Mying Eeptiles. 
Extinct Of the galleries running northwards from this, the one nearest 
Fishes. centre of the building is devoted to the collection of fossil 
Fishes, an account of which has been published in a special 
guide.* The next contains the Cephalopods, a group of animals- 
abounding in extinct forms, of which the Belemnites and 
Ammonites are the best known. The form and structure of 
their nearest Hving representatives, the various species of Cuttle- 
fishes, Squids, Argonauts and ^Nautilus are illustrated by models- 
and drawings placed near the entrance of the gallery and along 
the top-line of the wall-cases. The third gallery contains the 
remaining Molluscs and Brachiopods ; the Echinoderms, Anne- 
Extinct lids and Crustacea; the fourth, the Corals, Sponges, Protozoa, 
anrpilntt!^^ and Fossil Plants. In these last two galleries the British 
specimens are placed in the table-cases, and those of foreign 
origin in the cases round the walls. 
Historical The fifth gallery is set apart for the reception of certain 
special collections of historical interest, which, from the circum- 
stances under which they were formed, or came into possession 
of the Museum, or from their containing a large number of 
types described and figured in standard monographs, it has 
not been thought desirable to break up and disperse among the 
general collection. The principal of these are, the original 
collection formed by William Smith, the pioneer of geology 
in this country, the Searles Wood Collection of Crag MoUusca, 
the Edwards Collection of Eocene MoUusca, the Davidson 
Collection of Brachiopoda, the types of Sowerby's 'Mineral 
Conchology,' and lastly, but not least in interest, the specimens 
which, belonging to the collection of Sir Hans Sloane, form 
the nucleus of the whole Museum. 
Collections. 
* * Guide to the Collection of Fossil Fishes in the Department of Geology 
and Palaeontology.' Price fourpence. 
