CASTANEA SATIVA OR VESCA (_European chestnut_).--Leaves oblong-lanceolate, pointed, coarsely serrate, with rather long incurved spines on the teeth; smooth on both sides, but glossy and dark green above; thicker and of more substance than in any other species. Burs very large, with thick husk, and long, stout, branching spines, from a woody stem at the base; shell of nut thick, tough and leathery, of a dark mahogany brown; kernel enclosed in a rather tough but thin skin that is usually intensely bitter, a characteristic that readily distinguishes this from any of our species. Trees of large size, rather stocky; young shoots coarse, with smooth bark; buds prominent, glossy, and of a light yellowish-brown color. CASTANEA JAPONICA (_Japan chestnut_).--Leaves lanceolate-oblong (Fig. 23), finely serrate, indentations shallow, and the teeth slender pointed; pale green above and silvery or rusty white underneath. Burs with a very thin husk; spines short, widely branching from a short stem. Nuts large to very large, usually three in a bur; shell thin, and of a light brown color; the inner skin thin, fibrous, but not as bitter as in the European varieties, and the kernel somewhat finer grained and sweeter. Trees of moderate growth and are said to rarely exceed fifty feet high in Japan. The growth is slender in comparison with the European or American chestnut, and the habit is decidedly bushy, the new growth of the season usually producing a number of lateral twigs late in summer. The leaves here seem to be more persistent, probably because the season is not long enough to insure thorough ripening. The reader will please bear in mind that this description of the Japan chestnut is drawn from the introduced varieties or those raised from the imported nuts, and not from the trees growing in their native habitats. All the varieties that I have seen appear to belong to one type or species, and they come from the warmer parts of that country; but Prof. Sargent, in his "Forest Flora of Japan," says that while the largest nuts appear in the markets of Kobe and Osaka, from whence they come to this country, there are varieties offered for sale in the markets of Aomori, which is much further north, and these, he thinks, would produce a more hardy race of varieties than those we have already received from that country. As a race, all the Japan chestnuts are very precocious, the trees coming into bearing early whether raised from the nut or propagated by grafting.