~_ ‘CONTENTS. 
Page. 9 
Emmons, in a letter to Prof. Bronn of Heidelberg, 212.— 
Ill. Remarks on the Fauna of the Quebec Group of Rocks 
and the Primordial Zone of Canada. In a letter addressed 
to Mr. Joachim Barrande of Paris, by Sir William E. Logan, 
216.—IV. Letter from James Hall, Palontologist of New 
York, to the Editors of the Americah Journal of Science 
and Arts, 220. 
XX. On a new Lead-Salt, rie Sein to Cobalt Yellow ; “4 
S. D. Hayes, - 226 
XXI. Sketch of the Geology of the we about . Head. wa- 
: ters of the Missouri and Yellow Stone Rivers; by Dr. F. V. 
Haypen, with an Introductory letter by Capt. Raynotps, 229 
XXII. Remarks on the Atomic oe of the Elements ; 2 
Prof. Woxcotr Gisss, M.D., 246 
XXIII. Abstract of a Meteorological Sia for a year "1860, 
kept at Marietta, Ohio; by Dr. S. P. Hitprern, - 252 
XXIV. On the Theory of = in eo i ?. Semmes 
Hunt, F.R.S., - - 256 
XXV. Description of three new sini. =e ere 
Meteoric Stone : Oldham County (Ky.) Meteoric Iron: Rob- 
ertson County (Tenn. ) Meteoric Iron; Prof. J. Law- 
RENCE SMITH, : a? 264 
XXVI. Correspondence of Mr. Skene Nitin alee ry: Du- 
méril, 266.—M. Payer, 267.—Pierre Daussy : Insalubrity 
of the air of Paris, 268.—Diffusion of Germs, (Panspermia,) 
Researches upon Spontaneous Generation, 269.—Chemical 
Synthesis, 270.—Acclimation, 272.—The Serimetre, 273. 
—Pseudomorphism and Pseudomophosis, 273.—The ques- 
tion of Inundations: Bibliography, 2 
SCIENTIFIC INTELLIGENCE. " 
and Physics—On a Compound of Boron with Ethyl, FraNKLAND and Dees, 
pou 
276.—On the vapor-density of Chlorous Acid, Minton: New Researches on the Oxyd of 
Ethylene, Worrz, 277.—Transformation of Olefiant Gas into complex Organic Acids, 
of : 
Wor Zy 278.—On the determination te ric Acid, C ‘i, _ 
preparation of Oxygen, H. St.Ciain Devine and Desray: — neta Polyethylenie 
Alcohols, Lovrenco, 280.—On Baudrimont’s Phaisenbphia ot arbon, PLAYFaiR, 251. 
Analytical Chemistry.—Contributions from the ee of the Yale Scientific School ; 
ee by Profs. Brusu and Jounson,—Observations on Chancel’s method of 
estimating phosphoric Acid, by Henry I. — 281. 
aids Physics —On the loss of ie t by lass Shades, i in a letter to the Editors, by 
Mr. Wii11am Kina, 283,—Note by Mr. Poa 284. 
Technical Chemistry —On the ih of Copper and Zinc, by Frank H. Srorer, 286. 
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