vi 



Page 



On a New Class of Organ o -metallic Bodies containing Sodium. By J. 

 Alfred Wanklyn, Professor of Chemistry in the London Institution .... 2SG 



On the Temperature of the Human Body in Health. By Sydney B,inger, 

 M.D. (Lond.), Professor of Materia Medica in University College, Lon- 

 don, and the Late Andrew Patrick Stuart 287 



Preliminary Note of Researches on Gaseous Spectra in relation to the 

 Physical Constitution of the Sun. By Edward Frankland, F.R.S., and 

 J. Norman Lockyer, F.R.A.S 288 



On the Structure of Rubies, Sapphires, Diamonds, and some other Minerals. 

 By H. C. Sorby, F.R.S., and P. J. Butler 291 



Note on a Method of viewing the Solar Prominences without an Eclipse. 

 By William Huggins, F.R.S 302 



Additional Observations of Southern Nebulas. In a Letter to Professor 

 Stokes, Sec. R.S., by Lieut. J. Herschel, R.E 303 



Note on the Separation of the Isomeric Amylic Alcohols formed by Fer- 

 mentation. By Ernest T. Chapman and Miles H. Smith 308 



Note on the Heat of the Stars. By William Huggins, F.R.S 309 



On the Fracture of Brittle and Viscous Solids by " Shearing." By Sir W. 

 Thomson, F.R.S 312 



Note by Professor Cayley on his Memoir a On the Conditions for the Ex- 

 istence of Three Equal Roots, or of Two Pairs of Equal Roots, of a Binary 

 Quartic or Quintic " 314 



Appendix to the Description of the Great Melbourne Telescope. By T. R. 

 .Robinson, D.D., F.R.S., &c 315 



Note on the Formation and Phenomena of Clouds. By John Tyndall, 

 LL.D., F.R.S 317 



On the Behaviour of Thermometers in a Vacuum. By Benjamin Loewy, 

 F.R.A.S 319 



Account of the Building in progress of erection at Melbourne for the Great 

 Telescope. In a Letter addressed to the President of the Royal Society 

 by Mr. R. J. Ellery, of the Observatory, Melbourne 328 



Contributions to the Fossil Flora of North Greenland, being a Description 

 ui the Plants collected bv Mr. Edward Whymper during the Summer of 

 1867. By Prof. Oswald" Heer, of Zurich 329 



On the Specific Heat and other physical properties of Aqueous Mixtures and 

 Solutions. By A. Dupre', Ph.D., Lecturer on Chemistry at the West- 

 minster Hospital, and F. J. M. Page 333 



Researches into the Chemical Constitution of Narcotine, and of its Products 

 of Decomposition. — Part III. By A. Matthiessen, F.R.S., Lecturer on 

 Chemistry in St. Bartholomew's Hospital 337 



Researches into the Chemical Constitution of Narcotine, and of its Products 



