f^v. ,r' 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



Prof. Chem., Min., &c. in Yale Coll. ; Cor. Mem. Soc. Arts, Man. and Com., Cor. Mem. Met See, 

 and For. Mem. Geol. Soc, Hon. Mem. Br. and For. Abor. Protec Soc, and of Scien. Soc, Lon- 

 don ; Mem. Gcol. Soc, and Hon. Mem. Lin. and Statis. Socs., Paris ; Mem. Roy. Min. Soc, 

 Dresden ; Nat. Hist Soc, Halle; Hon. Mem. Agric. Soc, Bavaria | Imp. Agric. Soc., 

 Moscow; Nat Hist Soc, Belfast, Ire. ; Phil, and Lit. Soc, Bristol, Eng. ; Hon. 

 Mem. Roy, Sussex Inst, Brighton, Eng. ; Cor. Mem. of the Nat Hist Soc., 

 and of the Archseological Soc, Athens, Greece; Lit. and Hist Soc., 

 Quebec; Mem. of various Lit and Scien. Soc. in the U. States. 



AIDED BY 



BENJAMIN SILLIMAN, Jr., A. B. 



Assistant in the department of Chemistry, Mineralogy and Geology in Yale College; Cor. Mem. 



of the Meteorological Soc., London ; Sec of the Vale Nat Hist Soc. ; Mem. of the CofiO. 



Acad, of Arts and Sci. ; Cor. Mem. of the Lyceum of Natural History, 



New York; of the Boston Society ot Natural History, &c. 



VOL. XXXVIII.--N0. 1.— JANUARY, 1840r 



FOR OCTOBER, NOVEMBER, AND DECEMBER, 1839. 



NEW HAVEN: 



Sold by A. H. MALTBY and B. & W. NOYES.— Philadelphia, CAREY & 

 HART and J. S. LITTEIA..— Baltimore, Md., N. HICKMAN.— JVcio York, 

 CARVILL & Co., No. 108 Broadway, and G. S. SILLIMAN, No. 44 Wil- 

 liam St.— Boston, C. C. LITTLE & Co.— London, JAMES S. HODSON, 

 No. 112 Fleet St., and WILEY & PUTNAM, 35 Paternoster Romv.— Paris, 

 J. B. BAILLIERE, Libraire, Rue de L'Ecole-de-M6decine, No. 13 his.— Ham- 

 burgh, Messrs. NESTLER & MELLE. 



PRINTE D BY B. L. HAMLEN. 



Pnblislied at New Haven, Jan. 1, 1S40. 



