328 REPORT OF THE CONFERENCE ON GENETICS. 
owing to the limited extent of the experimental grounds, it is necessary 
to limit the cultivation to seedlings that give an estimated yield of 30 tons 
of canes per acre and a saccharine content of over 18 percent. This year, 
1906, about 5,000 seedlings have been planted out, from which it is not 
expected to choose more than 100 for further propagation, and it is doubtful 
whether more than one of these will prove worthy of recommendation for 
planting on a large scale. 
Work on these lines has been continuously pursued in Barbados since 
1888, and the following tables of results, extracted from the reports 
recently issued by d’Albuquerque and Bovell on the experiment work 
with sugar-cane under the direction of the Imperial Department of Agri- 
culture, show that many of these seedling canes give results vastly superior 
to the standard variety. 
TABLE IV. 
Mran Resutts—-Buack Sos, ror SEasons 1900-5 
Canes. Per cent. Sacch. Q. of Saecch. Muse. 
Cane | Tons of rotten lb. purity lb. yield. 
| per acre canes per gall. | per cent. | per acre Tons 
B. 1529 (1904-5) . - | 28°92 1:54 2-406 92°18 8,477 3°03 
B. 147 (1900-5) ; ‘ 28°35 3°77 1:912 86°88 7,006 2°50 
B. 208 (1900-5) - : 24-72 4:93 2°250 90°70 6,863 2°45 
White Transparent!) 95.55 5.99 9-088 8970 6,453 | 2-30 
(1901- ) 1 
TABLE VY. 
Mran Resutts—Rep Soins, ror Seasons 1900-5. 
Canes. Per cent. Sacch, Q. of Sacch. | Muse. 
Cane Tons of rotten lb. purity lb. yield. 
per acre canes per gall. | percent. | per acre Tons 
B. 1529 (1904-5) 
B. 208 (1900-5) 
White fence aa 5 
wees on aie 
97-12 | 1:67 2°270 93°79 7,428 | 2°65 
26-78 | 5:52 2°146 91:23 6,695 2°39 
| tie HAL tt ia 
| 
4:93 1909 90:09 | 5,404 1:93 
It will be seen by the above tables that B. 1529 gave an average, in 
both red and black soils, of 2,024 Ib. of sugar per acre more than White 
Transparent, while B. 208, a cane which has lately become extensively 
cultivated in different parts of the West Indies and elsewhere, gave a 
yield of 410 lb. in black soils and 1,291 lb. of sugar per acre in red soils 
more than the standard variety. 
These tables have been prepared as they give the results of experi- 
ments over an extended number of years; but if the table, published in 
the report, which embodies the results of different plots of new varieties for 
1903-5, be examined, it will be found that White Transparent comes out 
eightieth on the list of those cultivated in black soils, while the Bourbon 
is still lower. (See fig.) 
It has often been urged that these results are based upon small plots, 
which do not furnish a sufficient quantity of cane for the tests to be of 
value to sugar planters; but tables are also given in the above-mentioned 
report which show that seedlings B. 147 and B, 208 are giving better 
