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Eeport on the Effects of Contact Metamorphism exhibited by the Silu- 

 rian Eocks near the Town of New Galloway, in the Southern Uplands 

 of Scotland. By S. Allport, F.G.S., and Professor T. G. Bonney, D.Sc, 

 F.E.S 193 



On some variations of Cardium edule, apparently correlated to the Con- 

 ditions of Life. By William Bates* >n, M.A., Fellow of St. John's 

 College, Cambridge, and Balfour Student in the University.... 204 



On the Occurrence of Skatole in the Vegetable Kingdom. By Wyndham 

 E. Dunstan, M.A., F.C.S., Professor of Chemistry to, and Director 

 of the Eesearch Laboratory of, the Pharmaceutical Society of Great 

 Britain 211 



The Conditions of the Eeaction between Copper and Nitric Acid. By V. 

 H. Veley, M.A., the University Museum, Oxford 216 



Notes on the Absorption -spectra of Oxygen and some of its Compounds. 

 By G. D. Liveing, M.A., F.E.S., Professor of Chemistry, and J. Dewar, 

 M.A., F.E.S., Jacksonian Professor, University of Cambridge 222 



Note on the Photographic Spectra of Uranus and Saturn. By William 

 Huggins, D.C.L., LL.D., F.E.S., and Mrs. Huggins 231 



The Physical Properties of Vulcanised India-rubber. By A. Mallock .... 233 



List of Presents 249 



No. 283.— June 20, 1889 



On the Cavendish Experiment. By C. V. Boys, A.E.S.M., F.E.S., 

 Assistant Professor of Physics at the Normal School of Science, South 

 Kensington 253 



On Time-lag in the Magnetisation of Iron. By J. A. Ewing, B.Sc, 

 F.E.S., Professor of Engineering in University College, Dundee 269 



Note on the Thermo-electric Position of Platinoid. By J. T. Bottomley, 

 M.A., F.E.S., and A. Tauakadate, Rigakusi 286 



Specific Inductive Capacity of Dielectrics when acted on by very rapidly 

 alternating Electric Forces. By J. J. Thomson, M.A., F.E.S. , 

 Cavendish Professor of Physics, Cambridge 292 



A new Form of Gas Battery. By Ludwig Mond and Carl Langer 296 



Contributions to the Chemistry of Storage Batteries. No. 2. By E. 

 Frankland, D.C.L., F.E.S 304 



Contributions to the Anatomy of Fishes. I. The Air-bladder and 

 Weberian Ossicles in the Siluridae. By T. W. Bridge, M.A., Professor 

 of Zoology in the Mason College, Birmingham, and A. C. Haddon, 

 M.A., Professor of Zoology in the Eoyal College of Science, Dublin .... 309 



The Chemistry of the Urine of the Horse. By Fred Smith, M.E.C.V.S., 

 F.I.C., Army Veterinary Department, Professor Army Veterinary 

 School, Aldershot 328 



A Chemical Inquiry into the Phenomena of Human Eespiration. By 

 William Marcet, M.D., F.E.S 340 



