vi CONTENTS. 
XII. Notice of a Cetaceous Animal supposed to be new — 
the American coast ; by Witt1am Sampson, 
XIII. Documents in Commemoration of Baron Cuvier, - 30; 
XIV. Notices of American Steam Boats; by W. C. es 
of New York, - 311 
XV. On the Economy of Fuel with caléroude: to its ioteiitic 
applications; by Water R. Jonnson, Prof. of Mech. 
and Nat. Phil., Franklin Institute, Philadelphia, 318 
XVI. The Rattle Snake disarmed by the leaves of the White 
Ash; by Judge Wooprurr, 337 
AVIl. On oe new Fossil and Recent Shells of the United 
s; by T. A. Conran, 3 
XVIII. Report on the Filter and Prepared ecacul of M. ‘De- 
; by Franxiin Re-Swurn, of Philadelphia, - 346 
XIX, No oes of Prof. Olmsted’s futeedaction. to Natural Phi- 
losophy, for the students in Yale College, — 351 
XxX. Obituary Notice of Dr. Gaspar Spurnzuem, — - - 356 
MISCELLANIES.—FOREIGN AND DOMESTIC. 
NECROLOcY. 
1. Notice of the deaths of eminent men, - 370 
2. Sketches of the lives of Louis Simond and CharlesVieto 
Bonstetten, is 
CHEMISTRY. 
1. Combinations of carburetted hydrogen, __ 377 
2,3. Separation of the protoxide from the oxide of eee 
ceine, a new substance discovered in - OPER ge TD 
4. Meconine, ; 4 = 586 
5. Effects of the ateis-pullipticator, . =e 381 
6, 7. Oxygenated water—Two chlorides of waiphar, =i oh 
8, 9. Density of the vapor of sulphur and of phosphorus—Pres- _ 
ervation of substances by means of alkali - - 
10, 11. Crucible for fusion—Researches relative to the azote 
ormed in animal substances, . 
12. Process for silvering copper so as to ish. - 386 
13, 14. Glass syphons for transferring corrosive Aude —Carbon- 
ate of lime and its compounds, - 387 
GEOLOGY. 
i, New cave of bon 388 
2. Notice of Prof. Hitchcock's Report on the he Geology of Masea- 
chusetts. 
