16 



April 7, 1841. 



Dr. Gould in the Chair. 

 Ten members present. 



Mr. Bulfinch was elected Secretary pro tempore. 



Mr. Teschemacher read a paper i: On the Occurrence of 

 Phosphate of Uranium in the Tourmaline locality of Ches- 

 terfield." 



In examining specimens of the green and red Tourmaline. Mr. 

 T. observed a few minute yellow crystalline plates of a cubic form. 

 Possessing, himself, but few facilities for chemical analysis, he sent 

 the specimens to Mr. A. A. Hayes of Roxbuiy, with a suggestion 

 that the external characters agreed entirely with those of the salts 

 of Uranium. Mr. II. confirms this suggestion, and describes the 

 mineral " to contain phosphoric acid and Oxide of Uranium as 

 essential constituents only." The quantity found was small. There 

 were, however, two or three well defined cubic crystals, from two 

 to three lines in diameter, varying in color from straw yellow to 

 light green. Some exist in the red centre of the Tourmaline, and 

 are exposed on splitting the crystals ; others are on the Quartz, and 

 on the Albite forming the mass. 



Mr. E. S. Dixwell communicated a letter from Mr. J. I. 

 Bowditch. containing notices of a paper on Hurricanes 

 from Mr. Linsley of Connecticut, offered for insertion in our 

 Journal. 



Mr. Linsley supposes the cause of Hurricanes to be within the 

 earth, connected with the phenomena of Earthquakes. Earth- 

 quakes and Volcanoes have, in several instances, been coincident 

 in point of time, or nearly so, with Hurricanes. But facts in suf- 

 ficient number have not yet been recorded to justify anv conclu- 

 sion, and Mr. Bowditch recommends that the paper be returned to 

 the author, with every mark of respect, acknowledging that his 

 views are new, and the subject one of great interest. On motion 

 of Dr. Wyman, it was voted, that the paper be returned accord- 

 ingly- 



