CONTENTS. 
NUMBER XLI. 
Arr. XVIII. Second Report on Observations of the Aurora Bo- 
realis, 1850-1851; by J. H. Lerroy,~ - - 
XIX. On the Arts and Manufactures of India; froma Loca Py 
Prof. Roy.e, : . ‘ 
XX. Abstract of a Paper on the of Monte Somme 
by ArcancELo Scaccui, of se ie with observations, "Y 
. James D. Dana, - : . 
XXI. Further Remarks on oe en ms Warming of 
; by S. Wesser, M.D., . 
Roo 
XXII. Sues on the Use of the Zenith Nika | in Deicuntias 
Latitudes in the Coast Survey, by Talcott’s Method, and on 
the Reduction of the Observations; by A. D. Bacue, - 
XXIIf. Contributions to oe se i Wotcorr 
2 
Gisss, M.D., 
XXIV. On Certain ‘Kia laaies in the Solar System : Prchnlgy 
Dantet Kirxwoop, - 
XXV. On the Eruption of Mauna Loa, Hawai, Pebroary, 1852 ; 
by Rev. Tirus Coan, - . 
-XXVI. On the Rocks of Canada ; by Moses: w. E. Loos, a 
J. W. Satter, - - 3 ? 
XXVII. The Inverted aise new form of icicle ; 
with the Description of a New Eye-piece Micrometer, and 
a New form of Goniometer for Measuring the Angles of 
ote under the oe - Prof. J. LawRrENcE 
Smitn, M.D., . 
XXVIII. ee of a Majorolagioal Sonal, kept at Beloit 
College, Beloit, Wis., for the year 1851; by Prof. S. P. 
Latsrop, M.D.,_ - - - - - . - - 
XXIX. Solidification of the Rocks of the Florida Reefs, and the 
Sources of Lime in the Growth of Corals; by Prof. Horsrorp, 
XXX. Note on the Eruption of Mauna Loa; by James D. Dana, 
SCIENTIFIC INTELLIGENCE. 
241 
245 
254 
Chemistry and Physics Bie ere: of Arsenic in Organic Substances, 259.— 
Identity of Donarium with Tho : Conversion of Sulphates into Chlorids : 
Anhydrous Organic Acids, 260. aeons of Sulphur and Barium: On the 
Corrosion of Lead by Galvanic action, by R. Bockuer, 261.—Crystallization of 
Glass: Analyses of Snow and Rain water, by Eccene Marcuanp: Titanium 
and Zirconia in Mineral Waters, 263. 
