vi CONTENTS. 
stron Stats of August 10, 1856.—Astronomical Observatory at the — 
University of 5 alae 290. 
Miscellaneous {ntelligence.—Observations on the climates of California, by GEORGE 
BaRTLETT, —Apparatus for taking specific gravity, b sts. ECKFELDT and 
Dusors, 294.—Discovery of Paleozoic Fossils in Eastern Massachusetts, by Professor 
Rogers, 296.--Hailstorm in Guilford County, N. C., 298.—Monks Island or 
Colombian Guano, by Dr. A. S. Prego, 299.—On the Monks Island Guano, by Dr. 
Es, 300.—Neo-Macropia: Artificial light for taking photographs, 300.—Wa- 
ters of the Dead Sea: Density of the a of the Caspian Sea, by A. Morrrz: 
raphy, by J. P. Lesuey, se Son A Treatise on Land Surveying, by Professor W. M. a 
Givvesriz, A.M.: Annals of the peccitaaiad Observatory of Harvard College, 302. 
--Manual of Blowpipe. ‘lay sis, for the use of Students, by Prof. Winuiam Ex- : 
pErHorst: Notices of new Publications, 303. i 
NUMBER LXVI. 
Page. 
Art. XXIV. On American Geological History : Address before 
the American Association for the Advancement of eae 
August, 1855, by James D. Dana, - 30) j 
XXV. On the Plan of Development in the Geological Hisibey of "a 
North America, with a map; by James D. Dana, - - 335 
XXVI-° Re-determination of the Atomic Mei of Lithium ; by 
Prof. J. W. Mayet, - - 
XXVII. On the Relations of the Fossil Fishes of he Bacctton 
of Connecticut and other Atlantic States to the Liassic and 
Oolitic Periods; by W, C, Reprrexp, - - 
XXVIII. On the Application of the Mechanical Theory of Heat 
to the Steam Engine; by R. Crausivs, - 
XXIX. Examination of the Meteoric Iron from Kivi, Maen : 
by W. J. Tayor, - - . : 
XXX. On the Heat in the Sun’s ae ; “ cn roid - S172 
XXXI. Circumstances 2d the Heat of the Sun’s Rays; by 
Eunice Foorr, — - - - 
XXXII. Review of a portion of the Geologist oe of the United 
States and British Provinces Y Jules Marcou ; “2 WILtiam 
P, Buake,~ - 
XXXII. On New Fossil Corals pote North Guatigg, by E. 
Emmons, - é ” 
