THE . 
AMERICAN JOURNAL | 
OF 
SCIENCE AND ARTS. _ 
"CONDUCTED BY 
BENJAMIN SILLIMAN, M.D. LL. D. 
- Prof. Chel, ‘Min., &e. in Yale Coll.; Cor. Mem. Soc. Arts, Man, and tein: and 
For. Mem. Geol. Soc., London; Mem. Geol. Soc., Faris; Mem. Roy. Min. Soc., 
Dresden; Nat. Hist. Soc., rag Imp. Agric. Soc., Moscow; Hon. ‘Mem. ae 
Lin. Soc., Paris; Nat. Hist. Soc. Belfast, Ire.; Phil: and Lit. Soc. ae 
Bristol, sea ; Hon. aa Roy. Sussex Inst. Brighton, Eng.; ars Ee tt 
nd His . sa Quebec; Meni. of various ro 
Lit, d Scien. Soc. in America. 
VOL. ‘XXXxII- No. 1 OCTOBER, 180 ae 
FOR OLN, AUGUST, J AND § 
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