( 591 ) 
INDEX 
TO 
VOLUME FOURTH. 
A 
Page 
Aciotis, description of the genus^ - « 300 
Adam, Di% his geological account of the district betv/een 
the Jumna and Nerbiiddlia, &c. - 24 
Adam's Peak, account of an Ascent to the summit of, by 
Messrs Sawers and Marsha] 1, - 3Q6 
Adamson;, Mr J.y his account of Marine deposites on the 
margin of Lochlomond, - « 334 
Alca artica, numerous in the Island of Foula, - 249 
Alluvial cover, divided into Old and New, 58 ; a rare in- 
stance of organic remains in the former, 6o 
Algae, Mr Greville's descriptions of two new plants of the 
order, found in Scotland, - 213 
Anas, Mr Macgillivray's proposed specific characters ap- 
plied to the genus, - . 535 
Anatomy of the Beaver, Dr Knox's observations on the, 548 
Anderson, Mr S., his account of Primitive Rocks near 
Stromness, in Orkney, 173; Geognostical 
sketch of part of the Great Glen of Scotland, I90 
Andrgea, description of the genus, « 319 
