19: 
Isaria Sphingum, Schw. Syn. Fung. Carol. 1822, p. 100. 
Kipayo, on a moth, Dummer 1187. 
1. congesta, Berk. et Br. in Journ. Linn. Soc. XIV, 1878, . 
9 
p. 96. 
Kipayo, Dummer 1173; Mount Elgon, Small 240. 
I. acervata, Massee in Kew Bull. 1901, p. 167. 
Kipayo, Dummer 1175, 1429. 
IIl.—SEED SELECTION IN THE CULTIVATION 
OF HEVEA BRASILIENSIS. 
Ciayton BEADLE and Henry P, STEVENS. 
Our attention was recently drawn by the Director of the Royal 
Botanic Gardens, Kew, to the probable importance of seed selec- 
tion in the cultivation of Hevea brasiliensis, He pointed out 
the large increase in the yield of alkaloids from cinchona bark 
which has been obtained as the result of seed selection, and 
suggested that important results might similarly be obtained in 
the cultivation of Hevea brasiliensis. 
n June last we addressed a letter on this subject to the Rubber 
Growers’ Association, which has been submitted to Messrs. 
Morgan, Marsden and Reeve, the Association’s resident scientific 
officers in the East. We give below the substance of our original 
letter, together with a digest of their views :— 
In the cultivation of cinchona the yield of quinine from the 
bark has been raised from about 3 per cent. to 7 per cent. or 
more as the result of planting from the seed of trees whose bark 
yielded a high percentage of alkaloids. Can a similar method 
of seed selection be applied to increase the yield of rubber? 
The matter, however, is not so simple in the case of Para 
rubber as in the case of cinchona. In the latter, the analysis of 
the bark reveals the percentage of alkaloids, but in the case of 
‘ara rubber it would be necessary to keep daily records of the 
yields of individual trees over some considerable period before it 
could be said with certainty whether the trees were good or poor 
ilkers. Work of this nature would have to be undertaken as a 
Having ascertained definitely that trees vary in yield, it will 
then be necessary to devise means for selecting seeds from good 
and avoiding those from on milkers. This matter 1s 
more difficult in the case of a rubber tree than in the — 
B 
