VI 



Page 



Note on the paper (read April 24) A Summary of an Inquiry into the 

 Function of Respiration at Various Altitudes on the Island and Peak 



of Teneriffe. By William Marcet, M.D., F.RS 226 



Agricultural, Botanical, and Chemical Results of Experiments on the 

 Mixed Herbage of Permanent Meadow, conducted for more than 

 twenty years in succession on the same land. By J. B. Lawes, LL.D., 

 F.R.S., F.C.S.,and J. H. Gilbert, Ph.D., F.R.S., F.C.S., F.L.S 230 



On the Comparative Structure of the Cortex Cerebri. By Be van Lewis, 

 L.R.C.P. Lond., Assistant Medical Officer West Riding Asvluni, Wake- 

 field \ 234 



An Account of Experiments on the Influence of Colloids upon Crystalline 

 Form, and on Movements observed in Mixtures of Colloids with 

 Crystalloids. By William M. Ord, M.D. Lond., F.L.S 238 



Report to the Committee on Solar Physics on the Basic Lines common to 

 Spots and Prominences. By J. Norman Lockyer, F.R.S 247 



On a New Method of Studying Metallic Vapours. Bv. J. Norman 

 Lockyer, F.R.S 266 



Supplementary Note on the Volumetric Estimation of Sugar by an 

 Ammoniated Cupric Test giving Reduction without Precipitation. By 

 F. W. Pavy, M.D., F.R.S 272 



About some General Laws of Animal Life. By Nicholas Wagner, Pro- 

 fessor of Zoology, University, St. Petersburg 273 



List of Presents 274 



No. 198.— November 20, 1879. 



Experimental Researches on the Electric Discharge with the Chloride of 

 Silver Battery. By Warren De La Rue, M.A., D.C.L., F.R.S., and 

 Hugo W. Miiller, Ph.D., F.R.S 281 



Researches on the Action of Organic Substances on the Ultra-Violet Rays 

 of the Spectrum. Part III. On Examination of Essential Oils. By 

 W. N. Hartley, F.R.S.E., &c, Professor of Chemistry in the Royal 

 College of Science for Ireland, Dublin, and A. K. Huntington, F.I.C., 

 F.C.S., Associate of the Royal School of Mines 290 



Preliminary Note on Magnetic Circuits in Dynamo- and Magneto-Electric 

 Machines. By Lord Elphinstone and Charles W. Vincent, F.R.S.E., 

 F.C.S., F.I.C. .. 292 



Further particulars of the Transit of Venus across the Sim, December 9, 

 1874 ; observed on the Himalaya Mountains, Mussoorie, at Mary- Villa 

 Station, Lat. 30° 28' N., Long. 78° 3' E., height above sea 6,765 feet, 

 with the Royal Society's 5-inch Equatoreal. Note III. By J. B. N. 

 Hennessey, F.R.S. 297 



Preliminary Report to the Committee on Solar Physics on the evidence 

 in favour of the Existence of certain Short Periods common to Solar 

 and Terrestrial Phenomena. By Balfour Stewart, F.R.S., Professor 

 of Natural Philosophy in Owens College, Cambridge, and William 

 Dodorson 303 



