328 The Supplement to the Tropical Agriculturist 



Manihot Glaziovii for normal tropical climates. 

 Manihot Dichotoma for rather dry regions. 

 Manihot Piauiensis for light sandy soil only in 

 rather dry regions. 



These three varieties are very suitable for elevations ; especially Dichotoma 

 and Piauiensis which have been successfully planted up to 5,500 feet. 



Seeds true to name 



carefully prepared and tested, we supply for trial orders, postage paid to all 

 countries, in 



Parcels of lOlbs. net at £3, 



after receipt of money order or cheque. 



10 lbs. contain about 3,700 seeds of Dichotoma or Piauiensis; about 6,300 

 seeds of Glaziovii ; if requested the parcels can also be assorted, according to 

 orders in two or three of these varieties. — Prices for bags of 135 lbs. on 

 application. 



Hamburg 1. 



Telegraphic-Address: "Gevokind Hamburg." 

 :: A. B. C. Code 5th Edition. :: 



(1) The number of trees to he aimed at is 

 from 90-100, and 1 should advise thinning to less 

 than 115-120, in view of inevitable loss later 

 from storms, diseases, etc. 



(2) Remove backward trees in the first in- 

 stance ; if this does not reduce the number suf- 

 ficiently, careful selection should be made, care 

 always being taken to leave the healthy, well- 

 grown trees. 



(3) Trees should be uprooted. I have tried 

 pollarding, and do not think it at all satis- 

 factory. 



1 am by no means sure that by scientific 

 manuring considerably more than 100 trees per 

 acre can be grown. 



Victor Kinloch, Esq. (Jekam Estate.) 

 I have read your notes on thinning-out Hevea 

 estates very carefully. The desired average 

 number of permanent trees per acre to be aimed 

 at is, in my opinion, about 80, but the thinning 

 should be done by degrees, and not all at once. 

 The thinning-out process could be spread over a 

 period, say from 2 to 3 years, in a case where a 

 large number of trees are to be removed, and 

 when the thinniDg-out process has been left till 

 the trees are in bearing. This method would 

 save the expenditure of a large gum of money 



in one year, and allow for the payment of divi- 

 dends during a period when incomes are likely 

 to be still small. Moreover, during this period 

 trees which yield t?he smaller quantity of rubber 

 or are deformed or backward could be picked 

 out, leaving ocly the healthiest and strongest 

 plants. 



The entire and immediate removal of whole 

 rows, is, in my opinion, unnecessary, and far too 

 drastic, and leaves no margin for further reduc- 

 tion by diseases, etc. When thinning is to be 

 carried out, the whole tree should be removed, 

 and not merely pollarded ; Buch a tree would re- 

 quire constant pruning, and is at the same time 

 taking goodness out of the soil which would 

 otherwise benefit the adjacent trees. On the 

 removal of a tree it should be burnt at once, or 

 taken to the lines by coolies for fire-wood, the 

 latter method being pteferable, saving the cost 

 of cutting up and burning. On estates planted 

 12 by 24 feet 1 would advise thinning down to 

 100 trees an acre, which leaves a margin of 20 

 trees per acre to allow for deaths from un- 

 avoidable causes. 



Manuring is a subject that I know very litfle 

 about, and I do not see the necessity of such an 

 operation on estates on virgin soil and perio- 

 dically forked over; provided, of course, that the 



