CONTENTS. 



PAGE 



lum," or Prismatic Auriscope, adapted to 

 this method of observation. By Adam 

 Warden, M.D., F.R.C.S.E. (With a 

 Plate and Woodcut.) Communicated by 

 the Royal Scottish Society of Arts. . 273 



Art. VII. Comparative Analysis of Recent and Fossil 



Bones. By J. Middleton, F.G.S., . 285 



VIII. On the Occurrence of Fluorine in Recent as 

 well as in Fossil Bones. By Charles 

 Daubeny, M.D., F.R.S., . . 288 



IX. On the Existence of Phosphoric Acid in 

 Rocks of Igneous Origin. By George 

 Fownes, Ph. D., Lecturer on Chemistry in 

 Middlesex Hospital Medical School, . 294 



X. An Account of Electrical Experiments. By 

 Mr R. Adie, Liverpool. Communicated 

 by the Author, .... 298 



XL On the Origin of the Nilotic or Egyptian 

 Population. By Samuel George Mor- 

 ton, M.D., .... 305 



XII. On some Particular Phenomena presented by 

 the Mica Slate Formation at Finsberg, in 

 the Riesingebirge. By M. Gustav Rose, 311 



XIII. On Guano from the Yorkshire Coast, and 



from the North Coast of Scotland. By 

 John Davy, M.D., F.R.S. London and 

 Edin. Communicated by the Author, 313 



XIV. Professor Buckland on Artesian Wells. Com- 



municated by the Author, . • 318 



XV. On Fossil Fishes:— 



1. Their Classification, . , • 331 



2. Fossil Fishes important in an Anatomical point 



of view, 335 



3. Importance of Fossil Fishes, in a Geological 



point of view, . . . . .341 



XVI. On the Cause of the Electricity of Steam. 



By G. A. RowELL, Esq. Communicated 



by the Author, . . . 347 



