CONTENTS OF VOLUME XXXIX. 
NUMBER I. 
Page. 
Art. I. Notice of the Wonders of Geology ; by Gipzon ALcER- 
NON ManTeEtu, LL. D. F. R.S., 1 
_. IL Observations upon the Effects produmetes on ee by 
._ _. the Frost which occurred in England in the winter of 
1837-8 ; by Prof. Joun Linpiey, . 18 
Ill. Miscellaneous Notices on Galvanic Fouls in Wee 
addressed to Prof. Silliman, October 4, 1838, and Au- 
gust 6, 1839, from the vicinity of London ; a WIL- 
LIAM STURGEON, Esq.,__. 28 
IV. Facts relative to the Pumpetatara of the Ton, as Medes 
ced from a series of observations made at Amherst Col- 
lege in 1839; by Prof. E. S. Snett, . 
VY. On the Variation and Dip of the Magnetic Needle i in the 
__ United States;~by Prof. Extas Loomis, . . i; = 
VIL Caricography; by Prof. C. Dewey, 50 
VII. Notice of the Tooth of a Mastodon; i janes Wr: 
eS i See 53 
VIII. pout Divisibility ay PE ' 55 
IX. Formation and Dispersion of a Thunder i, 
helia, and i ead ee ae Wits Gay- 
LORD, ‘ “ee 
X. Phrenology, 65 
XI. Table showing the First iecknice of — the Pedas 
and the time of Opening of the Connecticut River at 
Middletown; by Joserx Barratt, M. D., 
XII. Applications of the Igneous Theory of the Earth ; ee 
Prof. J. H. Laturop, 
XIII. Notice of Third Annual ey on the Geologie’ Suk: 
vey of the State of New York, to the Assembly, Docu- 
ment 275, Feb. 27, 1839; by Prof. Oxiver P. Hus- 
Barp, M.D., . . 95 
XIV. An Answer to Dr. Hare’s eg on tan Theoretical 
opinions; by M. Farapay, . : ‘ ‘i 
