/ PROCEEDINGS OP 

 THE ROYAL SOCIETY. 



vol. xxxv. . No . 224. 



CONTENTS. 



February 1, 1883. 



I. On the Electrical Eesistance of Carbon Contacts. By Sheleord 



Bid well, M.A., LL.B ! 



II. On the Affinities of Thylacoleo. By Professor Owen, C.B., F.R.S., &c. 19 

 III. Preliminary Note on a Theory of Magnetism based upon New Experi- 

 mental Kesearch.es. By Professor D. E. Hughes, E.E.S. ... 19 



February 8, 1883. 



Note on Terrestrial Radiation. By John Tyndall, F.R.S. ... 21 



February 15, 1883. 



I. Some Experiments on Metallic Reflection. III. On the Amount of 

 Light Reflected by Metallic Surfaces. By Sir John Coneot Bart 

 M.A. c . ~. . . . . . . 26 



II. Description of an Apparatus employed at the Kew Observatory, Rich- 

 mond, for the Examination of the Dark Glasses and Mirrors of 

 Sextants. By Gr. M. Whipple, B.Sc, Superintendent ... 42 

 III. On the Atomic Weight of Manganese. By James Dewae, M.A., E.R.S., 



Jacksonian Professor, Cambridge, and Alexander Scott, M.A. . 44 



February 22, 1883. 



I. The Effects of Temperature on the Electromotive Eorce and Resistance of 



Batteries. By William Henry Preece, F.R.S. ■ . 48 



II. Preliminary Note on the Action of Calcium, Barium, and Potassium on 

 Muscle. By T. Lauder Brunton, M.D., E.R.S., and Theodore Cash 

 |; mj>- . . . • . . ; . G3 



III. On the Formation of Uric Acid in the Animal Economy and its relation 



to Hippuric Acid. By Alfred Baring Garrod, M.D., F.R.S. . 63 



For continuation of Contents see 4th page of Wrapper. 



Price Four Shillings mid Sixpence. 



