188 Proceedings of the Wernerian Society. 
the African Expedition, dated Mourzuk, 17th September 1822; 
likewise the first part of Mr Macgillivray’s Remarks on the 
Specific Characters of Birds. 
April 5 . — The Secretary read an Extract from a Letter rela- 
tive to the appearance of Pompeii, written by Lieutenant Boyd* 
It. N., and communicated by Mr Arnott ; also a Description 
of a reversed Species of' Fusus , by Dr Fleming. Mr Gre- 
ville then read Observations on the Formation of Lead-Spars , 
communicated by Mr Braid of Leadllills. And Mr Deuchar 
exhibited and explained some curious Experiments on Crystalli- 
zation. 
April 19- — The Secretary read a paper by Dr Knox On 
the Anatomy of the Beaver ; and Observations by Mr Don, 
on a new Natural Family of Plants, to be called Cobeacea. 
Dr Knox then read an Inquiry into the Original and Char- 
acteristic Differences of the Native Races inhabiting the extra- 
tropical part of Southern Africa. Professor J ameson gave an 
account of a communication from Dr Boue, dated Vienna, in 
which he controverts the late Observations of Professor Buck- 
land of Oxford, in regard to the Secondary Formations of the 
Alps of Switzerland, and also detailed his Observations on the 
Pyrenees, and South of Germany. 
April 26.— Mr Arnott read a paper, by Mr L. Edmondston, On 
the Black-billed Auk and Lesser Guillemot , and Professor Jame- 
son described the specimens exhibited. Dr Knox read a paper 
On some Peculiarities of the Structure of the New Holland Ca- 
sowary. A memoir on the Bignoniacece , by Mr Don, was read ; 
and likewise the first part of Mr Ellis’s Account of Dr Rus - 
coni's Observations on the Natural History and Structure of the 
Aquatic Salamander. Before the close of the Meeting, Pro- 
fessor Jameson gave an account of a series of Models, exhibited 
at the Meeting, representing the different Indian Castes in Ben- 
gal ; also of some Cinerary Urns, lately dug up at Dean Bank, 
near Stockbridge. Some remarkable Javanese Deities, and a 
complete set of Musical Instruments from Nepaul, were likewise 
exhibited. 
