EUCALYPTUS TREES. 395 
sugar ; the Batavian variety (S. violaceum, Tussac) 
is content with less fertile soil. Many other varieties 
are known. Excessive rains produce a rank luxuriance 
of the canes at the expense of the saccharine princi- 
ple. Rich manuring is necessary to attain good crops, 
unless in the best of virgin soil. The lower leaves of 
the stem must successively be removed, also super- 
abundant suckers, to promote the growth upward, 
and to provide ventilation and light. Out of the rem- 
nants of sugar-cane, molasses, rum, and taffia can be 
prepared. The average of sugar varies from 1 ton 6 
cwt., to 3 tons for the acre. For fuller information 
the valuable local work of Mr. A. McKay, «: The 
Sugar-cane in Australia,’? should be consulted. The 
stately S. spontaneum, L., which extends from India 
to Egypt, is available for scenic culture. It attains a 
height of 15 feet. Other tall kinds of Saccharum 
occur in South Asia. 
Sagittaria lancifolia, L.—From Virginia to the An- 
tilles. This very handsome aquatic plant can doubt- 
less be utilized like the following species. It attains 
a height of 5 feet. 
Sagittaria obtusa, Muehlenberg. (S. latifolia, Will- 
denow.)—North America, where it replaces the close- 
ly-allied S. sagittifolia. A few other conspicuous spe- 
cies are worthy of introduction. 
Sagittaria sagittifolia, L.—Europe, North and Mid- 
dle Asia, east to Japan. One of the most showy of 
all hardy water-plants; still not alone on that account 
deserving naturalization, but also because its root is 
edible. If once established this plant maintains its 
ground well, and might occupy spots neither arable 
nor otherwise utilized. 
