CONTENTS {continued). 



December 15, 1881. ! 



I. On the Electromotive Properties of the Leaf of Dionsea in the Excited 

 and Unexcited States. By J. Buedon Sanderson, M.D., F.B.S., 

 &c 



II. On some Effects of Transmitting Electric Currents through Magnetised 



Electrolytes. By Dr. G-. Goee, F.E.S. . . . . > 151 



III. Prehminary Eeport to the Solar Physics Committee on the Sun-spot 



Observations made at Kensington. By J. N. Lockyee . . .15^ 



IY. On /3-Lutidine. By C. Geeyille Williams, P.E.S. . . .15! 



Y. On the Effect of the Spectrum on the Haloid Salts of Silver, and on 



Mixtures of the same. By Captain Abney, E.E., P.E.S. . . .16' 



TI. On a New Electrical Storage Battery. By Heney Sutton (Ballarat, 



Victoria) . .18? 



December 22, 1881. 



I. On the Germinal Layers arid Early Development of the' Mole. 



By Waltee Heape . 19( 



II. On the Bhythm of the Heart of the Frog, and on the Nature of the 



Action of the Yagus Nerve. By W. H. G-askell, M.D. Cantab. . 192 



III. On Melting Point. By Edmund J. Mills, D.Sc, P.E.S., Young 



Professor of Technical Chemistry in Anderson's College, Glasgow . 20! 



IY. Memoir on the Theta-Functions, particularly those of Two Variables. 



By A. E. Poesyth, B.A., Fellow of Trinity College, Cambridge . 206 



Y. On certain Geometrical Theorems. No. 1. By W. H. L. Eussell, 



P.E.S !"".: 



YL On a Class of Invariants. By John C. Malet, M.A., Professor of 



Mathematics, Queen's College, Cork ....... 215 



VII. On the Constituent of the Atmosphere which, absorbs Eadiant Heat. 

 By S. A. Hill, B.Sc, Meteorological Eeporter for the North- 

 Western Provinces and Oudh, India. 216 



List of Presents 226 



On Trichophyton tonsurans (the Fungus of Kingworm) . By GrEOEG-E Thin, 



M.D. (Plate 2.) 234; 



On Bacterium decalvans: an Organism associated with the Destruction of the 



Hair in Alopecia areata. By G-eoege Thin, M.D. (Plate 3.) . 247 



Obituary Notices : — 



Sir Philip de Malpas G-eey Egeeton, Bart., M.P. 

 Peopessoe Eolleston 



xxii 

 xxiv 



