PROCEEDINGS OF 



THE EOYAL SOCIETY. 



vol. xl vii. No. 289. 



CONTENTS. * x 2 &9 



k . l T . < PAGE 



JfarcA 6, 1890. 



List of Candidates . .276 



I. On a second Case of the Occurrence of Silver in Volcanic Dust, namely, 

 in that thrown out in the Eruption of Tunguragua in the Andes of 

 Ecuador, January 11th, 1886. By J. W. Mallet, F.R.S., V.P.C.S., 

 • University of Virginia . . 277 



II. On the Tension of Kecently Formed Liquid Surfaces. By Loed 



Ratleigh, Sec. B.S . . 281 



III. On the Development of the Ciliary or Motor Oculi G-anglion. By J. C. 



Ewaet, M.D 287 



IV. The Cranial Nerves of the Torpedo. (Preliminary Note.) By J. C. 



Ewaet, M.D 290 



List of Presents . .292 



March 13, 1890. 



I. On the Organisation of the Fossil Plants of the Coal-measures. Part 

 XVII. By William Ceaweoed Williamson, LL.D., F.R.S., Pro- 

 fessor of Botany in the Owens College, Manchester .... 294 



II. The Nitrifying Process and its Specific Ferment. By Peecy F. Frank- 

 land, Ph.D., B.Sc. (Lond.), A.R.S.M., &c, Professor of Chemistry in 

 University College, Dundee, and G-ba.ce C. Feankland . . . 296 



List of Presents 29& 



March 20, 1890. 



Bakeeian Lectfee. — The Discharge of Electricity through G-ases. (Pre- 

 liminary Communication.) By Abthttr Schustee, F.R.S., Professor 

 of Physics in Owens College, Manchester 300 



List of Presents 300 



For continuation of Contents see 2nd 'page of Wrapper. 



Price Four Shillings. 



June 13, 1890. 



