EUCALYPTUS TREES. 383 
tries around the Mediterranean Sea. The foliage of 
this shrub or small tree, reduced to powder, forms 
the sumach of commerce. Many localities in our col- 
ony are particularly well adapted for the growth of 
this bush. It is remarkably rich in tannic acid, 
yielding as much as 30 per cent. , and extensively used 
for the production of a superior Corduan or Maraquin- 
leather. The cultivation presents no difficulty. Su- 
mach can also be used for ink and various particularly 
black dyes. Under favorable circumstances as much 
as a ton of sumach is obtained from an acre. 
Rhus Cotinus, L.—The Scotino. Countries at the 
Mediterranean Sea. The wood of this bush furnishes 
a yellow pigment. The scotino, so valuable as a ma- 
terial for yellow and black dye, and as a superior tan- 
ning substance, consists of the grinded foliage of. this 
plant. 
Rhus glabra, L. —North America, extending to 54° 
N. L. This sumach shrub will grow on rocky and 
sterile soil. It produces a kind of gall, and can also 
be used as a good substitute for the ordinary sumach. 
This species can easily be multiplied from suckers. 
It will live on poor soil. American sumachs contain 
generally from 15 to 20 per cent. tannin. 
Rhus lucida, L.—South Africa. This shrub proved 
here of particular adaptability for forming hedges. 
About half a hundred South African species are 
known, of which probably some could be utilized like 
ordinary sumach, but hitherto we have remained un- 
acquainted with the nature and degree of any of their 
tanning and coloring principles. 
Rhus semialata, Murray.—China and Japan. This 
shrub produces a kind of nut-galls, 
