481 



293. Miscellaneous. Optional. 



Jst prize. Hussain Bin Haji Ishak, Penang. 

 (For a model of cotton spinning apparatus.; 

 Commended. Nain Lenggong, Negri Sembilan. 

 Special prize. Tan Ong Pin, Kuala Lumpor. (For making 

 tricks.) 



Special prize. H. B. Ellerton D. 0. (for implements collecting 

 wood oil). 



PERSONAL. 



Mr. H. C. Pratt, the Government Entomologist, has been trans- 

 ferred from the Institute for Medical Kesearch to the staff of the Direct- 

 or of Agriculture and will be engaged in the first instance in completing 

 his investigations published last May in this Bulletin into the life 

 history of Termes Gestroi, the white ant attacking living rubber trees. 

 He will also carry on experiments in the direction of prevention and 

 cure of this ubiquitous pest. 



GROWTH OF GUTTA PERCHA. 



The Editor Agricultural Bulletin, 



Singapore. 



Dear Sir, 



In reference to Mr. Burn Murdoch's interesting article on the rate 

 of growth of forest trees in the E. M. S. the following measurements of 

 two Getah Taban trees growing amongst my young Para trees may be 

 of interest. The trees I may mention are situated on a gentle slope 

 and have been practically clean weeded the whole time. Measurements 

 taken 3ft. from the ground. 



Tree No. 1. Tree No. 2. 



18th 



January 



1906 



u¥ 



Hi' 



25th 



April 



1906 



uv 



iir 



18th 



October 



1906 



15|" 



m" 



18th 



October 



1907 



17 " 



uv 



5th 



September 



1908 



18 " 



15Y 



Therefore during 31 months the two trees have increased in girth 

 4i" and 4i" respectively, or an average increase of about 1.65" per 

 annum, against 1.69" of the 100 Taban trees at Taiping, referred to by 

 Mr. Murdoch. 



In a year or two these tw 7 o Taban trees will be entirely shut in by 

 Para trees, when there will be probably a falling off in the rate of growth, 

 so far as girth is concerned. I shall continue my measurements. 



Yours Faithfully, 



G. A. h. 



