CONTENTS. Hi 



VII. Notice of an erroneous Method of using the Theodo- 

 lite, with a strict Analysis of the effects of various 

 arrangements of Readers. By Mr Ejdward Sang, 

 F.R.S.E., M.S.A., Civil Engineer and Machine- 

 maker. Communicated by the Society of Arts 

 for Scotland, . . . .173 



VIII. Chemical Views regarding the Formation of Rocks, 

 which seem to afford new arguments in favour of 

 Neptunism. By Professor and Mining Director 

 Nepomuk Fuchs of Munich, . . 182 



IX. Description of several New or Rare Plants which 

 have lately flowered in the neighbourhood of 

 lEdinburgh, and chiefly in the Royal Botanic Gar- 

 den. By Dr Graham, Professor of Botany in 

 the University of Edinburgh, . . 194 



X. Report of the Committee appointed by the Society of 

 Arts for Scotland, to award Prizes for Communi- 

 cations read and exhibited during Session 1837- 

 38, . . . . . .199 



XI. Researches in Embryology. First Series. By Mar- 

 tin Barry, M.D., F.R.S.K., Fellow of the Royal 

 College of Physicians in Edinburgh, 203 



XII. New Publications, .... 206 



1. Sketch of the Civil Engineering of North America. 



By David Stevenson, Civil Engineer. John 

 Weale, London, 1838 206 



2. Memoirs of the Wemerian Natural History Society 



for the years 1831-37. Vol. VII. With Thirty-five 

 Coloured Geological Sections, and a Coloured Geo- 

 logical Map ; and Sixty-seven Illustrative Figures 

 of Fishes. 8vo. Pp. 550, 1838. Black & Co., 

 Edinburgh ; and Longman & Co., London. . 208 



3. Insecta Lapponica descripta a Johanne Wilhelmo 



Zetterstedt, 1 vol. 4to. Lipsiaoc. 1838. . . 209 



4. Traits Elementaire de Conchyliologie, avec I'appli- 



cation de cette science h la Gcognosie. Par G. P. 

 Deshayes. 8vo. Chez Crochard & Compie. Paris, 212 



