257 



Notes on Above. 



Owing to changes of supervision the conditions were not strictly 

 adhered to, and therefore the results of the experiment are rather 

 misleading. Special attention is now being given to them. 



RUBBER SEEDS. 



Six hundred thousand rubber seeds were sent to Trinidad. Two 

 hundred thousand rubber seeds were sent to Mr. B. O. Stoney, 

 Labuan. Requests were receieved from Trinidad and Java for 

 1,000,000 and 100,000 rubber seeds, respectively; 482,000 and 91,000 

 have been forwarded. The order will be completed early in 191 1. 



EXPERIMENTS ON GUNONG ANGSI. 



The girths on these rubber trees on the various experiment plots 

 were taken with the following results : 



Clearing. No. of Trees Total No. Percentage of 



No. Elevation. ready to of trees trees ready 



tap. to tap. 



1 ... 300 ... 365 ... 529 ... 69 



2 ... 600 ... 32 .. 180 ... 18 



3 ... 1,000 ... 321 665 ... 48 



4 ... 1,200 ... (not planted) ... 



5 ... 1,600 ... 24 ... 90 ... 27 



6 ... 1,800 ... 17 ... 91 ... j8 



7 ... 2.100 ... ... ... 66 



8 ... 2,400 ... 2 ... 90 ... 2 



Notes on Above. 



Although plot No. 2 has not done well, the results tend to show 

 that the higher the elevation the slower the growth of the tree. 

 The trees at an elevation of 2,400 feet look as healthy as those 

 at 300 feet. 



SPECIES OF RUBBER OTHER THAN PARA. 

 Purple Manicoba Rubber {Manihot sp.) 

 Planted in November, 1907, Kuala Lumpur: 

 Average girth 3 feet from ground, 1908 5^ inches 



1909 W M 



1910 9A „ 



Notes on Above. 



The girths of the above trees show similar growth to that of 

 Para of the same age. 



JUQUIE Rubber {Manihot dicJiotoma). 

 ROMANGO Rubber {Manihot piauhyenses). 

 Manihot Heptaphylla. 

 Central American Rubber {Castilloa elastica). 



