4-. 



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J- 



Vol. XII. 



NOVEMBER, 1851. 



No. 36 



V ... ^ 



PublisJied the first day of every second months price ^b per year. 



THE 



..«» 



MERICAN JOURNAL 



* * 



or 



SCIENCE AND ARTS. 



4^ 



CONDUCTED BY 



Professors B. SILLIMAN, B. SILLIMAN, Jr., 



AND 



JAMES D. DANA 



AIDED 



THE DEPAHTMENT& OF CHEMISTRY AND PHYSICS 



ft 



Dr. WOLCOTT GIBBS 



No. 



SECOND SERIES. 



NOVEMBER, 1851. 



WITH SBYEN PLATES. 



> 



NEW HAVEN: 



PUBLISHED BY THE EDITORS. 

 [foe, agekts adosesses, see next page.] 



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Printed by B. L. HAMLEy— Printer to Yale CoHcge. 



""^^^^ tfpaid quarterly in advance, under 5C0 miks 4 c(s.; 5OO-i5C0 8 cte. ; A^i>"w< 



ii. ^f 4f' 



