420 Scientific Intelligence. 
cies of Forskohlea or of Droguetia exhibit in different parts of their in- 
florescence a mass of woolly hairs analagous to those which cover the 
cotton plant. None of the Urticacee have webbed hairs.—Jbid, p, 324. 
10. The Complete Writings of Thomas Say on the Conchology of the 
United States ; edited by W. 
Natural Sciences, of Philadelphia, etc. pp. 252, &vo, with 75 plates. 
New York: H. Bailliere, 1858.—The republication of the works of our 
oO us 
bibliographical 
subject, as the works of the other authors may for the most 
easily obtained. 
those from Nicholson’s Encyclopedia, (Pl. 69-72.) are fac-similes of the 
ne : 
a The size of the work is convenient, the text compact, 
_ and the printing good, although the typographical errors seem unfortun- 
