VI 
CONTENTS. 
P»6' 
Professor W. Thomson’s Account of Experimental Researches in Thermo- 
Electricity . 13 
Professor Tyndall on the Diamagnetic Force . 14 
Mr. C. F. Varley on Improvements in Submarine ami Subterranean Tele¬ 
graph Communications. 17 
Captain Ward’s Notice of some Experimental Researches into the Application 
of the Voltaic Battery to the Ignition of Gunpowder. 18 
Astronomy. 
M. Chacornac’s New Observations on Solar Spots and Fieeuhe, and their true 
Causes. 
Mr. Greg on Meteorolites and Asteroids . 
Mr. John IIartnup on the Variation in the Rates of Chronometers. 
Mr. W. S. Jacob’s Notes on the British Association Catalogue of Stars . 
M Lunar Surface 11P8 ° n MierometricaJ Photographic Drawings of the 
Mr. Daniel Vaughan’s Researches in Meteoric Astronomy. 
19 
19 
20 
25 
25 
26 
Tides. 
Rev. Dr. Wh EWELL on Mr. Superintendent Baclie’a Tide Observations . 28 
Meteorology. 
Professor Dovk on tho Distribution of Rain in the Temperate Zone.. 28 
r. John D«W. continuation of Remark, on the Climate of South... 29 
* "»*«"* Snow Crystals, a, seen in 
Mr. H. Poo,, on the Meteoroiogy the Alb i on Mines, .. * 
r- J. King Wa OD Allrore B or«U. s observe,, at St^ZZZZZ 47 
Mr. C B Instruments. 
D thin Glass Cells for mounting 
: 
. 4 “ 
