PROCEEDINGS OF 



THE ROYAL SOCIETY. 



VOL. XXXIII. 



No. 218 



January 12, 1882. 



CONTENTS. 



PAGE 



I. On the Results of Recent Explorations of Erect Trees containing Rep- 

 tilian Remains in the Coal Formation of Nova Scotia. By J. W. 

 Dawson, C.M.GL, LL.D., F.R.S., &c 254 



II. On tlie Variation of tlie Electric Conductivity of Glass with Tempera- 

 ture, Density, and Chemical Composition. TJy Thomas GrEAY, B.Sc, 

 E.R.S.E 256 



111. On a New Electrical Storage Battery. (Supplementary Note.) By 



HENBy Sutton ... 257 



I. On certain Definite Integrals. No. 10. By W. H. L. Russell, E.R.S. . £53 



II. Manometric Observations in the Electric Arc. By Professor Dewae, 



M.A., F.R.S . . £62 



I. On a Series of Salts of a Base containing Chromium and Urea. No. 1. 

 By W. J. Sell, M.A., F.I.C., Demonstrator of Chemistry in the 



II. On the Spectrum of "Water. No. II. By Professor Gr. D. Liyeizs'G, 



M.A., E.R.S., and Professor J. Dewae, M.A., E.R.S. . . .274 



January 19, 1882. 



January 26, 1882. 



University of Cambridge 



£67 



For continuation of Contents see 3rd paye of Wrapper. 



Price Five Shillings. 



