PROCEEDINGS OF 



THE ROYAL SOCIETY. 



vol. xlii. - -.r^E jX No. 251 



CONTENTS. 



January 6, 18S7. 



" PAGE 



I. On the Occurrence of Silver in Volcanic Ash from the Eruption of 

 Cotopaxi of July 22nd and 23rd, 1885. By J. W. Mallet, M.D., F.R.S., 

 University of Virginia .......... 1 



II. Preliminary Note on the Continuity of the Liquid and G-aseous States of 



Matter. By William Ramsay, Ph.D., and Sydney Young, D.Sc. . 3 



III. Note on Lepidod endron Hareourtii and L. fuliginosum, Will. By W. C. 



Williamson, LL.D., F.B.S., Professor of Botany in the Owens College 

 and in the Victoria University 6 



IV. On the Organisation of the Fossil Plants of the Coal-measures : Seteran- 



gium Tili&oides, .Will., and Kaloxylon Hoolceri. By Professor W. C. 

 Williamson, LL.D., F.R.S., Professor of Botany in the Owens College 

 and in the Victoria University ........ 8 



List of Presents ............ 10 



January 13, 1887. 



I. Supplementary Note on Polacanthus Foxii, describing the Dorsal and 

 some parts of the Endoskeleton imperfectly known in 1881. By J. W. 

 Hulxe, F.R.S • - \ . . . .16 



II. The Reputed Suicide of Scorpions. By Alfred G-. Bourne, D.Sc, 

 Fellow of University College, London, and Professor of Biology in the 

 Presidency College, Madras 17 



III. Supplementary Note on the Values of the Napierian Logarithms of 



2, 3, 5, 7, and 10, and of the Modulus of Common Logarithms. By 

 Professor J. C. Adam?, M.A., F.R.S \ 22 



IV. On the Crimson Line of Phosphorescent Alumina. By William Crookes, 



F.R.S., V.P.C.S. 25 



List of Presents ............ 31 



For continuation of Contents see 4<th page of Wrapper. 

 Price Three Shillings. 



