CONTENTS. IX 



Notice of Ancient Moraines in the Parishes of §trachur and Kilmun, 

 Argyleshire. Bv Charles Maclaren, Esq., F.R.S.E., . 279 



On the Properties of the Ordeal Bean of Old Calabar, Western 

 Africa. By Dr Christison, . . . . .280 



Experiments on the Blood, showing the effects of a few Therapeutic 

 Agents on that Fluid in a state of Health and of Disease. By 

 James Stark, M.D., F.R.C.P., . . . .282 



Extracts from a Letter from E. Blackwell, Esq., containing Obser- 

 vations on the movement of Glaciers of Chamouni in Winter. 

 Communicated by Professor Forbes, .... 283 



On the Mechanical Action of Heat: — Supplement to the first Six 

 Sections and Section Seventh. By W. J. Macquorn Rankine, 

 Esq., C.E., F.R.SS. Lond. and Edin., . . . 287 



On an Inaccuracy (having its greatest value about 1") in the usual 

 method of computing the Moon's Parallax. By Edward Sang, 

 Esq., ....... 292 



On Annelid Tracks in the Exploration of the Millstone Grits in 

 the South-west of the County of Clare. By Robert Hark- 

 ness, Esq., F.R.S.E., F.G.S., Professor of Geology, Queen's 

 College, Cork, . . . . . .294 



On Superposition. By Professor Kelland, . . .296 



On the Colouring Matter of the Rottlera tinctoria. By Thomas 

 Anderson, M.D., Regius Professor of Chemistry in the University 

 of Glasgow, . . . . . .296 



Experiments on Colour as perceived by the Eye, with Remarks on 

 Colour-Blindness. By James Clerk Maxwell, Esq., B.A., Tri- 

 nity College, Cambridge. Communicated by Professor Gre- 



' gory, : 299 



Notice of the Occurrence of British newer Pliocene Shells in the 

 Arctic Seas, and of Tertiary Plants in Greenland. In a letter 

 from Dr Scoular of Dublin. Communicated by James Smith, 

 Esq., of Jordanhill, ...... 301 



Account of Experiments to ascertain the amount of Prof. Wm. 

 Thomson's " Solar Refraction." By Prof. C. Piazzi Smyth, 302 



On the Extent to which the Theory of Vision requires us to regard 

 the Eye as a Camera Obscura. By Dr George Wilson, . 303 



Researches on the Amides of the Fatty Acids. By Thomas H. 

 Rowney, Ph.D., Assistant to Dr Anderson. Communicated by Dr 

 Anderson, ....... 305 



Notice of Some new Forms of British Fresh- Water Diatomaceae. 

 By William Gregory, M.D., F.R.S.E., Professor of Chemistry, 306 



On Glacial Phenomena in Peebles and Selkirk Shires. By Robert 

 Chambers, Esq., F.R.S.E., . . . . .308 



Preliminary Notice on the Decompositions of the Platinum Salts of 

 the Organic Allialies. By Thomas Anderson, M.D., Regius 

 Professor of Chemistry in the University of Glasgow, . 309 



On the Volatile Bases produced by Destructive Distillation of Cin- 

 chonine. By C. Greville Williams, Assistant to Professor An- 

 derson, Glasgow University, . . . .314 



