CONTENTS OF VOLUME XXXIX. 



NUMBER I. 



Page, 



Art. I. Notice of the Wonders of Geology ; by Gideon Alger- 

 non Mantell, LL. D. F. R. S., . . . . 1 

 II. Observations upon the Effects produced on Plants by 

 the Frost which occurred in England in the winter of 

 1837-8 ; by Prof. John Lindley, .... 18 



III. Miscellaneous Notices on Galvanic Results, in letters 



addressed to Prof. Silliman, October 4, 1838, and Au- 

 gust 6, 1839, from the vicinity of London ; by Wil- 

 liam Sturgeon, Esq., ...... 28 



IV. Facts relative to the Temperature of the Year, as dedu- 



ced from a series of observations made at Amherst Col- 

 lege in 1839 ; by Prof. E. S. Snell, ... 36 

 V. On the Variation and Dip of the Magnetic Needle in the 



United States ; by Prof. Elias Loomis, ... 41 

 VI. Caricography; by Prof. C. Dewey, ... 50 



VII. Notice of the Tooth of a Mastodon ; by Jeffries Wy- 



man, M. D., 53 



VIII. Infinite Divisibility of Matter, 55 



IX. Formation and Dispersion of a Thunder Shower — -Par- 

 helia, and Meteorological Register ; by Willis Gay- 

 lord, . . .59 



X. Phrenology, . . . . . . . .65 



XI. Table showing the First Appearance of Ice, the Closing 

 and the time of Opening of the Connecticut River at 

 Middletown ; by Joseph Barratt, M. D., . . 88 

 XII. Applications of the Igneous Theory of the Earth ; by 



Prof. J. H. Lathrop, 90 



XIII. Notice of Third Annual Reports on the Geological Sur- 

 vey of the State of New York, to the Assembly, Docu- 

 ment 275, Feb. 27, 1839 ; by Prof. Oliver P. Hub- 

 bard, M. D., 95 



XIV, An Answer to Dr. Hare's Letter on certain Theoretical 

 opinions ; by M. Faraday, 108 



JTJi(^' 



