CONTENTS. Vii. 



PAGE 

 Schuster, Arthur, Ph.D., F.R.S., F.R.A.S. — On some experiments 

 by Professor Hertz, of Carlsruhe, with ultra-violet Light and 



the Electric Discharge 6 



On researches by Professor Ilann, of Vienna, on Temperature in the 



centre of an anti-cyclone ... 92 



Smith, James. — Note on the bi-centenary of the Principia ... ... 59 



Stewart, Balfour, LL.D., F.R.S.— On Mr. Norman Lockyer's paper 



on the derivation of the heavenly bodies ... ... ... ... 18 



Williamson, W. C, LL.D., F.R.S.— On the fossil stigmarian roots of 

 a lepidodendroid or sigillarian tree in the Museum of the Owens 

 College ... ... ... ... ... ... ... ... 60 



Williamson, J. R. H. — On an 800-candle power Edison-Swan in- 

 candescent lamp and a new form of American frictional electrical 

 machine for exploding dynamite in blasting ... ... 12 1 



Meetings of the Microscopical and Natural History Section : — 

 Annual 

 Ordinary 14, 17, 26, 88, 99 



Meetings of the Physical and Mathematical Section : — 



Annual 



Ordinary ... ... ... ... ... ... ... .. 89 



Presentation to Mr. William Roscoe ... 



Report of the Council, April, 1888, with obituary notices of Charles 



Moseley and John Benjamin Dancer ... ... ... .-143 



List of the Council and Members of the Society ... ... ,., ... 273 



139 

 134 



138 

 15 



ERRATA. 



or in read on. 

 for November 1 6th read November 15th. 



M ,5 >> >> j> )> 



for disposition read deposition. 

 for full read first. 

 for titles read tables. 

 for Light read Rifle. 

 for visible read invisible. 

 for antozene read antozone. 

 for RUFiPEs read Montezuma. 



