same original stock for au indefinite period without deteriora- 
tion ; and as seeds hardly ever ripen on the canes, new 
plants must from time to time be brought from tbe distance. 
Thus IN'ew Caledonia has latterly supplied its wild-growing 
splendid varieties for replanting many sugar-fields in 
Mauritius. The Bourbon variety is praised as one of the 
lichest for sugar : the Batavian variety (^S. violaoeum, 
Tussac) is content with less fertile soil. Many other 
varieties are known. Excessive rains produce a rank luxu- 
riance of the canes on expense of the saccharine principle. 
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 superabundant suckers, to 
promote the growth upwards, and to provide ventilation and 
light. Out of the remnants of Sugar-cane Molasses, Eum 
and Taffia can be prepared. The average yield of Sugar 
varies from 1 ton 6 cwt. to 3 tons for the acre. Eor 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. 
Erom Virginia to the Antilles. This very handsome aquatic 
plant can doubless be utilized like the following species. It 
attains a height of 5 feet. 
Sagittaria obtusa, Muehlenberg. {S. latifolia, Willd.) 
North America, where it replaces the closely allied S. sagit- 
tifolia. A few other conspicuous species are worthy of 
introduction. 
Sagittaria sagittifolia, L. 
Europe, North and Middle 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. 
