strength of the rubber from the trees of various ages, but the fart 
remaps that the POTENTIAL STRENGTH of plantation rubber OF ANY 
dfat the ™ AT 0F . FINE PARA ' and il 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, y ana 
Yours truly, 
(End0Sure, Edgar b. Davis. 
Plantation Rubber. 
(Hevea Brazil iensis). 
First .—The rubber from young trees is not materially different 
rom 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. 
bifth: The plantation rubber has slightly less mineral matter 
than Fine Para. 
Sixth —The well-known fact that plantation rubber has from 
15 to 18 7 , less moisture than Fine Para. 
OBITUARY. 
Dr. M. Greshoff. 
We regret greatly to have to reord the death of Dr. M. Greshoff, 
the Director of the Koloniaal Museum, Haarlem, and 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 of 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. 
