H. BOTANY AND HORTICULTURE. 355 



moved was thrown outside of the building. From these the 

 species has been disseminated. It is known as the Accmtho- 

 spermum xanthoides. Bull. Torrey Botan. Cluh^ 3fay^ 1876. 



INVESTIGATIONS ON AMERICAN GOOSEBERRIES. 



Professor Gray, in an article in the American Naturalist 

 for May, in reference to the unsatisfactory condition of our 

 knowledge in regard to the American wild gooseberry, invites 

 botanists throughout the country to furnish information and 

 specimens by which the difficulties may be cleared up. The 

 species so far known to botanists are eleven in number, but 

 the history of several of these is very indefinite. Bulletin 

 Torrey Botan. Club, May, 1876. 



EXHIBITION BY THE AGRICULTURAL DEPARTMENT OF AMERICAN 



WOODS AT THE CENTENNIAL. 



One of the most interesting: features of the o'overnment 

 exhibition at the Centennial is the collection of sections of 

 forest trees displayed by the Agricultural Department, made 

 under the direction of Dr. George Vasey, botanist of the de- 

 partment. This includes nearly 400 species and varieties of 

 native North American trees, gathered directly for this oc- 

 casion by twelve collectors in various parts of the Union. 

 They embrace 50 species of sub-tropical trees of Southern 

 Florida, including five that are new to our flora, and obtained 

 by Dr. A. W. Chapman ; 25 species from Texas, one of them 

 believed to be new ; 30 from Southern California and Ari- 

 zona, embracing the tree yuccas and a recently known palm ; 

 50 species from the Pacific slope of California ; and 10 or 12 

 of the peculiar forms of Oregon, Among the 30 species from 

 the Sierra Nevada Mountains are large sections of some of 

 the noblest conifers of the world, such as the sugar-pine, the 

 Douglas spruce, the silver-fir, and others. 



The Rocky Mountains in Colorado and Utah furnish about 

 30 species ; Illinois and the Western States, 50 ; Vermont, 

 20; and Virginia about 50, most of the latter being from the 

 Mount Vernon estate, near Washington. 



From the Southern States, exclusive of South Florida, there 

 are about 90 species, one of them believed to be new. There 

 are 30 species of oaks, 30 of pines, 16 of spruce, and 20 of 

 other conifers. There is one extremely interesting group. 



