«American Woods,” 
a publication relating to American woods, and in which each is represented 
by actual and authentic specimens so prepared as to show transverse, radial and 
tangential views of the grain (see figures a, b and¢). The specimens are so thin 
as to allow the transmission of light, and thus the characteristic structure of each 
is beautifully shown. Accompanying text gives full information as to the botan- 
ical characters, habitat, physical and medicinal properties, uses, etc. The speci- 
mens and text are gathered together into neat cases resembling handsomely 
bound octavo volumes, each one representing twenty-five species, having at least 
seventy-five specimens, and selling at $5.00, expressage paid. 
PREPARATIONS OF WOODS FOR STEREOPTICON AND MICRO- 
SCOPE.—These are perfect in every way, elegantly prepared and accurately 
labeled. 
WOODEN CROSS-SECTION CARDS.—The toughness and ivory-like 
smoothness of these cards, especially when we consider that they are sections of 
wood cut.across the grain, are a surprise to everyone. Being perfectly adapted to 
printing, India ink work, painting, etc., they are very choice and valuable for 
advertising cards, invitations, calling ia: dinner cards, etc. Circulars and 
mule cards sent upon application. Address 
Ree HOUGH, 
Lowville; IN. Y. 
i view of a contemplated special investigation of the genus Astragalus 
(including Phaca, Diplotheca, Homolobus, Podolobus), Mr. E. P. Sheldon, 
Assistant in Botany at the University of Minnesota, in Minneapolis, U. 8. A., 
desires specimens of this genus from all parts of-the world. In exchange 
he offers either fungi or flowering plants from the valley of the Minnesota River, 
which derives a peculiar interest from its position as the central drainage system 
of the continent of North America. ~- 
Plants may be sent to him in care of the institution, and will be promptly 
_ acknowledged, as the sender may indicate his preferences. 
Dr. Morong’s Paraguay Plants. 
Subsequently to the distribution of the sets subscribed for, 
there will remain several partial ones, ranging from 100 to 400 
species, which will be sold at the rate of $10 per 100 speci- 
mens. Intending purchasers may correspond with him at the 
: - Herbarium of Columbia College. 
