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Bibliography and Collected Abstracts on Rubber Producing Plants: Other Than ...
No preview available - 1942
3-hour extraction acetone Apocynaceae benzene extract botanical identification Brazil California Castilla collected Compositae contained rubber crude rubber Department for analysis Department of Agriculture Department of Commerce desert rubber determine the rubber different plants District of Columbia Euphorbiaceae extraction period Florida furnished ground sample gums gutta Hall and Goodspeed Hampshire Hevea importance of rubber known to contain laboratories latex lllJ Louisiana material ment of Agriculture method of analysis Mexico miscellaneous plants molecular weight natural rubber number of samples number of species number that contained percent Philippine plant families plants tested polyisoprene resin rtrt rubber content rubber found rubber production rubber-bearing plants rubbertree Samples containing samples were submitted Solidago sources of crude sources of rubber South Carolina Maryland species tested specimens sticky submitted samples survey Table twigs Virginia Western Hemisphere