CONTfiNtS. 



Pag« 



inferences sug-gested by these notices as to 

 the causes of the Shock. By David Milne, 

 Esq., F.R.S.E., M.W.S., F.G.S., &c. Com- 

 municated by the Author. (Continued from 

 Vol. XXXV. page 159), ... 72 

 IX. On Cutting Half-Round, and other Curved- 

 Paced Files. By the late Sir John Robison, 

 K.H., F.R.S.E., F.R.S.S.A. (Communicated 

 by the Royal Scottish Society of Arts), . 86 

 Report ot Committee, . . . '87 



Extract from Letter Messrs Johnson, Garamell, 

 and Co., Sheffield, to the late Sir John Robison, 

 K.H., F.R.S.E., .... 88 



X. An Account of Experiments with Thermo- 

 Hydro-Electrical Currents, with an Exami- 

 nation of the Metals exposed to Thermo- 

 Electric Action. By M. R. Adie of Liver- 

 pool. Concluded from p. 353 of preceding- 

 Volume (Vol. XXXV.) Communicated by 

 the Author, . . . . .90 



Hydro- Electrical Currents, . . .95 



The Metals exposed to Thermo-Electric action, . 97 



XL On the Determination of the Index of Refrac- 

 tion by the Sextant, and also by means of an 

 Instrument depending on a new Optical Me- 

 thod of ascertaining the Angles of Prisms. 

 By William Swan, Esq. (With a Plate.) 

 Communicated by the Royal Scottish Society 

 of Arts, . . . . .102 



XII. On Solar Radiation, . * . .113 



XII I. On the Progress of Ethnology. By Dr Hodg- 



KiN. (Communicated to this Journal by 



the Ethnological Society of London), . 118 



XIV. Route to India. By Charles Maclaren, 



Esq., F.R.S.E. With a Map. Communi- 

 cated by the Author, . . .136 



XV. Report of the Researches of M. Agassijs during 

 his last two sojourns at I'Hotel-des-Neucha- 

 telois, upon the Lower Glacier of the Aar, 



