THE most perplexing problem of the rubber-planting industry is the variable yield capacity of different Hevea trees. The yields of individual trees range from half a pound to 12 lb. a year, and rare ...
A REVIEW of Mr. Herbert Wright's valuable work on Para rubber appeared, in NATURE about two years ago. The present edition (third) has bsen considerably enlarged, and in Mr. Wright's words “has been ...
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