Art. I. 
CONTENTS. 
—_— Oo 
Page. 
Principles of Geology, —- . 
. On some of the Vegetable Materials Tit which Cikdive, 
Twine and Thread, are made; by JAMES eet M. D., 
M.A.P.S., &c. - 
: Experinienti and Observations on N arcotine aiid Sulphate 
of Morphine; by Wixtram aa M. D. Prof. Mat. Med. 
&c. in Yale College, - 
- Oncertain new Bone Caves; by Mancee DE Sennts, Prof. 
of Geology, &c. at Montpelier, - 
- Apparatus for Potassium, &c.; by L. D. Giz: M. D. Asstt 
to Prof. Chem. in Coll. Phys. in New York, -  - 
- On Chloric Ether; by S.Gutnriz,  - - ~ 
. On Central Fotced by Prof. Taeopore Srl NG, 
- Notice of the Vesicating _—e of Cantharides; by 
G. W. Canrenrer, - 
- On the variable rapidity of action fatitian water ee hot 
iron; by Water R. Jounson, Prof. Mech. and Nat. Phil. 
in the Franklin Institute, Philadelphia, - 
Electro-Magnetic Apparatus; by Bensamw F. Foun, 
M. D., Prof. of Nat. Phil. in Union College, - 
Ea otice: of the Vaporization of Mercury in the fumes of 
Nitric Ether—also, of v re chemical — sad 
S. Gururir, - 
. Geological Notices; ty Lieut. W. W. Maru, ‘of the 
Mil. Acad. West Point, - 
. On North American fe hei “i N. M. Hests, late Prof 
in the Univ. of N. Car 
- On the Unicorn; by J. F. Lavennane, of Bobet: 
Translated by Jacos Porter 
1 
60 
64 
66 
69 
86 
12 
Physical Geography ; transiated ‘tom ae Bib. Univ. es 
Prof. Griscom, - . 
- Geological Susivaientes by Prof. nail sete, 2c 
- On the Application of Galvanic Ignition in Rock Blast- 
ing; by Rosrrr Hare, M. D., Prof. Chem. Univ. Penn. 
- Account of the Hudson and Mohawk Rail Road; by S. 
DeWrrr Broopcoop, Cor. Sec. Albany Ins. we ge 
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132 
139 
141 
