109 



strength of the rubber from the trees of various ages, but the fact 

 remains that the POTENTIAL STRENGTH of plantation rubber OF ANY 

 AGE IS LESS THAN THAT OF FINE Para, and it seems clear 

 that the necessary improvement in the cultivated product can be 

 obtained only through Improved Methods of Treatment. 



Trusting that this report may be of some benefit to you, and 

 with kind regards believe me, 



Yours truly, 



(Enclosure) Edgar B. Davis. 



Plantation Rubber. 



(Hevea Braziiiensis). 



First : — ^The rubber from young trees is not materially different 

 from those of much greater age, and leads us to the conclusion that 

 the age of the tree from which the rubber is extracted is not so 

 important as has been generally supposed. 



Second : — The potential strength of the plantation rubber is less 

 than that of Fine Para. 



Third : — Stretch satisfactory for all practical purposes. 



Fourth: — The plantation product has slightly less resin than 

 Fine Para. 



Fifth .--—The plantation rubber has slightly less niineral matter 

 than Fine Para. 



Sixth: — The well-known fact that plantation rubber has from 

 15 to 18% less moisture than Fine Para. 



OBITUARY. 



Dr. IVI. Greshoff. 



We regret greatly to have to reord the death of Dr. M. Greshoff, 

 the Director of the Koloniaal Museum, Haarlem, nnd a well-known 

 authority on drugs and other produce of the East. He'was found dead 

 at his desk on the morning of the 8th December having gone to work 

 there on the previous night. Dr. Greshoff was a frequent corres- 

 pondent with the Botanical Department, and was the author of many 

 works on drugs, and the chemistry and properties t)f many useful 

 Oriental plants. He translated into Dutch the articles on Malay 

 timbers and Malay drugs published in the Bulletin by the Editor 

 adding additional notes thereto. 



