EUCALYPTUS TREES. 437 
of our exports beyond home consumption. Dr. W. 
Hamm, of Vienna, has recently issued a vine map of 
Europe, indicating the distribution of the different va- 
rieties and the principle sources of the various sorts of 
wine. The writer would now merely add that the pres- 
ervation of the grapesina fresh state, according to M. 
Charmeux’s method, and the sundry modes of effect- 
ing the transit of ripe grapes to long distances, ought 
to be turned to industrial advantage. The pigment 
of the dark wine- berries is known as Oenolic acid. 
The juice contains, along with Tartaric acid, also 
Grape acid. All these chemically-defined substances 
have uses of their own in art and science. 
Vitis vulpina, L.* (Vitis rotundifolia, Mich. ) — 
The Muscadine or Fox Grape. South-eastern States 
of North America. This species includes as varieties 
also the Bullace, the Mustang, the Bullet Grape, both 
kinds of the Scuppernangs, and the Catawba Grape. 
The berries are of a pleasant taste, but, in some in- 
stances, of a strong flavor ; they are the largest among 
American grapes. 
Voandzeia subterranea, Thouars.—Madagascar and 
various parts of Africa, as far south as Natal. This 
Earth Pea is annual, and pushes its pods under ground 
in the manner of Arachis hypogzea for maturation. 
The pods are edible, and much consumed in tropical 
countries. 
Wallichia oblongifolia, Griffith. Himalaya, as far 
as 27° north. There one of the hardiest of all palms. 
It is not a tall one, yet a graceful and useful object 
for cultural industries. Several species exist. 
Wettinia augusta, Poeppig. — Peru, on mountains 
several thousand feet high. This palm is therefore 
likely to endure our clime. 
