18 
REPORT OF THE 
The extensive series ofTertiarv Fossils, which has long; formed 
one of the most instructive features in the general collection, 
has been increased by the donation of some choice fossils of 
the Coralline Crag from Mr. Start, of ISlettingham. 
Amongst the fossils obtained by purchase, and deserving of 
particular notice, is a large ammonite from the Calcareous Grrit 
of the Yorkshire Coast, in which a fortunate blow near the 
base of the outer chamber has beautifully displayed an included 
Aptychus or Trigonellite, a fossil body, the natural relations 
of which haye proved a most fruitful subject of speculation 
among naturalists. It is believed that no similar example is 
to be found in any other collection of Yorkshire fossils. A 
small specimen of the Crocodile (Teleosaurus) from the Lias 
of Whitby, in which the under surface of the lower jaw is 
beautifully shown, and some fine examples of fishes from the 
same formation, including the genera Pachycormis, Ptycho- 
lepis, and Lepidotus, haye likewise been added to the collection. 
A purchase has also been made of a few yery choice fossils 
from the neighbourhood of Lyme-Kegis, and yarious mamma- 
lian remains and miscellaneous fossils from Bacton in Xorfolk. 
ZOOLOGY. 
During the first six months of the year, an experienced 
bird-stufter was employed upon the premises in setting up 
a selection from the numerous skins of foreign birds which 
had long been accumulating in the Society’s stores; so that 
more than 300 additional specimens are now exhibited in the 
room appropriated to the ornithological collection. A recent 
donation of 80 skins of birds from Yan Dieman’s Land, presen¬ 
ted by Sir John Franklin, and another from Mr. G-ould of 100 
V 
Australian Species, have rendered it desirable to re-engage the 
services of the same person. The Council having determined 
upon adding to the Library a copy of the splendid work 
on the Birds of Australia, now in course of publication by Mr. 
Gould, this gentleman has undertaken to furnish free of cost to 
the Society, a complete scientific catalogue of the entire ornitho- 
