IV 



Page 



Photochemical Researches. Part IV. By Robert W. Biinsen, For. 

 Memb. R.S., and Henry Enfield Roscoe, Ph.D., Professor of Che- 

 mistry in Owens College, Manchester 39 



On the Occurrence of Flint-implements, associated with the Remains 

 of Extinct Mammalia, in Undisturbed Beds of a late Geological 

 Period. By Joseph Prestwich, Esq., F.R.S., F.G.S. &c 50 



Observations on the Discovery in various Localities of the Remains 

 of Human Art mixed with the Bones of Extinct Races of Animals. 

 By Charles Babbage, Esq., M.A., F.R.S. &c 59 



Remarks on Colour-blindness. By Sir John F. W. Herschel, Bart., 

 F.R.S 72 



On the Laws of Operation, and the Systematization of Mathematics. 

 By Alexander J. Ellis, Esq., B.A., F.C.P.S 85 



Annual General Meeting for the Election of Fellows 95 



On the frequent occurrence of Vegetable Parasites in the Hard Struc- 

 tures of Animals. By Professor A. W. Kolliker, of Wiirzburg 95 



Researches on the Phosphorus-Bases. No. VI. Phosphammonium- 

 Compounds. By A. W. Hofmann, LL.D., F.R.S. &c 100 



Notes of Researches on the Poly- Ammonias. No. VI. New Deriva- 

 tives of Phenylamine and Ethylamine. By A. W. Hofmann, 

 LL.D., F.R.S. &c 104 



On the Behaviour of the Aldehydes with Acids. By A. Geuther, 

 Esq., and R. Cartmel, Esq 108 



On the Action of Acids on Glycol (Second Notice). By Dr. Maxwell 

 Simpson 114 



Experiments on some of the Various Circumstances influencing Cu- 

 taneous Absorption. By Augustus Waller, M.D., F.R.S., Professor 

 of Physiology, Queen's' College, Birmingham 122 



On Spontaneous Evaporation. By Benjamin Guy Babington, M.D., 

 F.R.S. &c 127 



On the Application of the Calculus of Probabilities to the results of 

 measures of the Position and Distance of Double Stars. By the 

 Lord Wrottesley, F.R.S. &c 133 



Report of Scientific Researches made during the late Arctic Voyage 

 of the Yacht <Fox.' By Capt. M'Clintock, R.N 148 



On Recent Theories and Experiments regarding Ice at or near its 

 Melting-point. By Professor James Thomson 152 



Anniversary Meeting Address of the President 160 



On the Analytical Theory of the Attraction of Solids bounded by 

 surfaces of a Class including the Ellipsoid. By Professor W. F. 

 . Donkin, M.A., F.R.S 181 



Supplement to a Paper read January 27, 1859, " On the Thermody- 

 namic Theory of Steam-engines with dry Saturated Steam, and its 

 .application to practice." By W. J. M. Rankine, Esq., C.E., F.R.S. 183 



