195 



CONTENTS. XI 



Notice of the remarkable Mathematical Properties of a certain Pa- 

 rallelogram, By John Scott Russell, Esq., . . . 187 



On the Composition of a new Ink, which, by resisting chemical 

 deletion, promises to diminish the chances of the successful falsi- 

 fication of Bills, Deeds, and other Documents. By Professor 

 Traill, 189 



Abstract of first part of Memoir on the Mid-Lothian and East- 

 Lothian Coal Districts. By David Milne, Esq., . . 191 



Memorandum concerning different kinds of Heat being susceptible 

 of poliirization by transmission through a given bundle of Mica 

 Plates. By Professor Forbes, ..... 192 



Notice regarding a New British Species of Coregonus. By Dr 

 Parnell, . . 194 



Abstract of Part II. of Memoir, descriptive and explanatory of the 

 Mid-Lothian and East-Lothian Coal Fields. By David Milne, 

 Esq., ....... 



Practical Researches on Respiration. By Dr D. B. Reid, . 199 



The Keith Medal awarded by the Council, to Mr John Scott Rus- 

 sell for his Researches on Hydrodynamics, was presented by the 

 Vice-President, ....... 199 



Observations on the Fur Seal of Commerce. By Robert Hamil- 

 ton, Esq., 200 



On the Wild Ox of Scotland. By Dr Knox, . . .201 



On the Third Pair of Nerves. By Sir C. Bell, . . . ?02 



Inquiry whether Sea Water has its Maximum Density at some de- 

 grees above its freezing point, after the manner of Fresh Water. 

 By Dr Hope, 203 



On the Origin and Compound Functions of the Facial Nerve, or 

 Portio Dura of the Seventh Nerve. By Sir C. Bell, . . 205 



Description of the Hydrodyuameter, a new instrument for shewing 

 the rate of Sailing of Ships, and Velocity of Currents, Rivers, 

 Tides, &c. By Mr R. Adie of Liverpool. Communicated by Dr 

 Traill, 206 



A Verbal Communication on the Osseous Structure of Fishes. By 

 DrMacdonald, 207 



Researches on Heat. Third Series. By Professor Forbes, . 207 



Remarks on the Illustrations presented by the surface of the Moon, 

 respecting certain Geological Phenomena. In a Letter to Sir J. 

 Robison, K.H., from Professor Nichol, University of Glasgow, 210 



On the Fourth and Sixth Nerves of the Brain, being the concluding 

 paper on the distinction observed in the Nerves of the Encepha- 

 lon and Spinal Marrow. By Sir C. Bell, . . ,213 



On the Superficial Deposits of Gravel, Clay, Sand, &c., which cover 

 the Formations of the Lothians and South Coast of Fife. By 

 David Milne, Esq., . . . . . .214 



Investigation of a New Series for the Rectification of the Circle. 

 By J.Thomson, LL.D., Glasgow, . . . .216 



On the Real Nature of Symbolical Algebra. By D. F. Gregory, 

 B.A., . ....... 217 



