AMERICAN JOURNAL 
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SCIENCE AND ARTS. - 
CONDUCTED BY 
PROFESSOR SILLIMAN 
AND 
BENJAMIN SILLIMAN, Jr. 
VOL. XL.—APRIL, 1841. 
. (TO BE CONTINUED QUARTERLY.) 
NEW HAVEN: 
Sold by A. H. MALTBY and B. & W. NOYES.—Philadelphia, CAREY & 
HART and J. 8S. LITTELL.—Baltimore, Md., N. HICK MAN.—New York, 
CARVILL & Co., No. 108 Broadway, THEODORE FOSTER, Fulton St., 
and G. S. SILLIMAN, No. 44 William St—Boston, C. C. LITTLE & Co.— 
London and New York, WILEY & PUTNAM, No. 35 Paternoster Row, Lon- 
don and 161 Broadway, New York.—Paris, HECTOR BOSSANGE & Co., No. 
11, Quay Voltaire.—Hamburgh, Messrs. NESTLER & MELLE. 
PRINTED BY B. L. HAMLEN. 
Mo. Bot. Garden, 
1901, 
