iv CONTENTS. 
NUMBER CLXIV. 
P 
Art. XIII. a to Meteorology; by E. Loomis 
LOOUCIUGOR); «sin seas ace hee eods Ts os... 5. 1 
IV. CR ates on the Rocks and Ore-Deposits in the aed 
=. is otre Dame Bay, Newfoundland; by M. E. Wap 
XV. aber of Bitumens; by 8. F. Peckwam,.-----.-.-.--- 105 
XVI.—Measurement of rapidly alternating Blectrio Currents 
with the Galvanometer; by L. HEGSMAN, .- =. .. <- 117 
able Blink orsee'y of Nickel Ore from Nevada; by 8. B. 
en Ne ee 5 Sic he ee ee en ep eee 122 
XVIII. nb oe are and Waterfalls; by W. M. Davis,----.--- 123 
XIX.—The Influence of Light on hey Electrical Beliannste 
- Metals; by A. E. Bosrwick, ---..-...---.-.--.--- 133 
SCIENTIFIC INTELLIGENCE. 
Physics and Chemistry.—General Law of Solidification of Solvents, Raovt, i 
Ph rahe ction foes Oyanites and Ferrocyanides from Po rescd yom ORTLIE 
—Preparation of Marsh Wey oa TONE and TRIBE: eyptal- 
The — + eran of Oxygen, of Air, and of Carbonic oxide under tmosphe eric 
pressure, W ‘WSKI, 150.—The Scientific Papers of James anhveee Joule: 
Whirlwinds, ayn Le Tornadoes, W. M. Davis, 151. 
_ Geolcgy and Naturai History.—The Kame Rivers of Maine, G. H. Stonx, 152.— 
Notes on Tertiary ‘shells, O. Meyer, 154.—The Geological and Natural ‘History 
igi T B. Lorri: 
facaste of North America, L, Lesquerevx and T, P. ong 155. ay eat of 
mera of Vascular nine in the vicinity of S ancisco, H. H. BER, 
156, — Flora ign talis, Botsster: Flora of North Patagonia, J. BALL, 157.— 
of the generic ‘name Solenotus, A. C. STOKES, 1 
Miscellaneous Scientific Intelligence—Prehistoric Man in eit cn and Syria, Dawsox, 
158 New England Meteorol ogical Society : mechs sad of Canada, 159.— 
Royal Society of New South Wales: Census Reports on Cotton: German Devo- 
nian Phyllonos, Crustaceans, J. M. CLARKE: Niagara F Fossils, J. W. SPENCER, 
160. 
Obituary—Ferdinand yon Hochstetter,}160. 
