v CONTENTS. 



Optician. Communicated by the Society of 

 Arts for Scotland, . . . .178 



XVII. On the Epochs of Vegetation. By M. Henry 



Berghaus of Berlin, . . .182 



XVIII. On certain Peculiarities in the Structure of the 

 Short Sun-Fish (Orthagoriscus Mola). By 

 John Goodsir, Esq. M.W.S. Communicated 

 by the Author. With a plate, . .188 



XIX. On the former Existence of Glaciers in Britain, 194 



1. On the former Existence of Glaciers in Scotland. 



By De Buckland, . . . 194 



2. On the Geological Evidence of the former Exist- 



ence of Glaciers in Forfarshire. By Charles 



L yell, Esq., F.B.S., M.G.S., &c. . .199 



3. On the former Existence of Glaciers in the North 



of England. By Dr Buckland. . . 202 



XX. Description of several New or Rare Plants which 

 have lately Flowered in the Neighbourhood of 

 Edinburgh, and chiefly in the Royal Botanic 

 Garden. By Dr Graham, Professor of Botany, 206 



XXI. Proceedings of the Royal Society of Edinburgh, 209 



XXII. Proceedings of the Wernerian Natural History So- 

 ciety. Continued from vol. xx. p. 177, 211 



XXIII. Scientific Intelligence, . . . 215 



1. Fossil Fishes of Orkney, . . . 215 



2. Notice of the Publications of Professor Agassiz, 216 



XXIV. List of Patents granted from 25th September to 



17th December 1840, . . .217 



Errata in Professor Bischof's Memoirs, 220 



