CONTENTS. VU. 



PAGE 

 Thomson, William, F.R.S.Ed., F.C.S., &c. — On some elccti-ic dis- 

 charges from Rocks in the Austrian Tyrol... ... .. ... i 



On Mr. Hovenden's Experiments on Motes of Tobacco Smoke in Air 4 



On a Portrait of the late Joseph Baxendall, F.R.S 12 



Additional note on the Motes in Tobacco Smoke observed by Mr. 



Hovenden ... ... ... ... ... ... ... ... 1S9 



On the suspended Impurities in Manchester Water ... ... ... 206 



Trapp, G. S. — On the Erosion of a Lead Pipe laid over grass fields ... 89 



General Meeting ... ... ... ... ... ... .. ... 68 



Annual General Meeting ... ... ... .. ... .. ... 206 



Report of the Council, with Obituary Notices of Dr. J. E. Morgan, Joseph 

 Stretch Crowther, Rev. Julius Lloyd, August Wilhelm von Ilofmann, 

 Sir Richard Owen, Alphonse de Candolle, and Ernst Werner von 

 Siemens ... ... ... ... ... ... ... ... ... 228 



Treasurer's Accounts ... ... ... ... ... ... ... ... 246 



Meetings of the Natural Histoiy and Microscopical Section — Annual ... 226 



Ordinary ... ... ... ... ... 221, 222, 223, 224, 225, 225 



Annual Meeting of the Physical and Mathematical Section ... ... 227 



Annual Report of the Microscopical and Natural History Section ... 241 



List of the Council and Members ... ... ... ... ... ... 252 



PLATES, &c. 



TO FACE PAGE 



I. — To illustrate Mr. Melvill's paper on twenty-five new species of 



Marine Shells from Bombay .. ... ... ... ... 67 



IL — To illustrate the Trees struck by Lightning near Fallowfield ... 12 



