CONTENTS. vi 



PAGE 



XVI. Notes on some of the Buddhist Opinions and Monuments of Asia, 

 compared with the Symbols on the Ancient Sculptured " Standing 

 Stones" of Scotland. By Thomas A. Wise, M.D., F.R.S.E. (With 

 a Plate.) . . . . . . . 255 



XVII. On Superposition. By the Rev. Philip Kelland, M.A., Professor 



of Mathematics in the University of Edinburgh. (With a Plate.) 271 



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

 Colour-Blindness. By James Clerk Maxwell, B.A., Trinity 

 College, Cambridge. Communicated by Dr Gregory. (With a 

 Plate.) . . . . . . . .275 



XIX. Researches on the Amides of the Fatty Acids. By Thomas H. Row- 

 ney, Ph.D., F.C.S., Assistant in the College Laboratory, Glas- 

 gow, ........ 299 



XX. On the Volatile Bases produced by the Destructive Distillation of 

 Cinchonine. By C. Greville Williams, Assistant to Dr Ander- 

 son, University of Glasgow, ..... 309 



XXI. On the Extent to which the received Theory of Vision requires us to 

 regard the Eye as a Camera Obscura. By George Wilson, M.D., 

 F.R.S.E., Director of the Industrial Museum of Scotland, . 327 



XXII. On Errors caused by Imperfect Inversion of the Magnet, on Observa- 

 tions of Magnetic Declination. By William Swan. (With a 

 Plate.) ........ 349 



PART III. (1855-6.) 



XXIII. On a Problem in Combinations. By the Rev. Philip Kelland, 



M.A., Professor of Mathematics in the University of Edinburgh, 359 



XXIV. On Solar Light, and on a Simple Photometer. By Mungo Ponton, 



Esq., F.R.S.E., 363 



