India rubber world . ANDS. PHE Mexican Land and Colonization Company ownsseveral hundred thousand acres of land suitable forRubber and Coffee in the State of Chiapas, Mexico. Themajority of the coffee plantations in Soconusco now pro-ducing largely were originally purchased from this Companyalso La Zacualpa and other rubber further particulars apply to 0. H. HARRISON, Spreckels Annex, 713 market Street, SAN FRANCISCO. Vcntlon the, India tiubber Wvrla when i/et wru Rubber Cover for Mortars.—A German, R. Scholl, saysthe Chemiker-Zeiiung, has devised a rubber cap to cover mor-tars
India rubber world . ANDS. PHE Mexican Land and Colonization Company ownsseveral hundred thousand acres of land suitable forRubber and Coffee in the State of Chiapas, Mexico. Themajority of the coffee plantations in Soconusco now pro-ducing largely were originally purchased from this Companyalso La Zacualpa and other rubber further particulars apply to 0. H. HARRISON, Spreckels Annex, 713 market Street, SAN FRANCISCO. Vcntlon the, India tiubber Wvrla when i/et wru Rubber Cover for Mortars.—A German, R. Scholl, saysthe Chemiker-Zeiiung, has devised a rubber cap to cover mor-tars while hygroscopic, poisonous, strong or offensive smellingdiugs are being powdered. The cap is a conical sheet of rub-ber, the center being perforated to admit the pestle, and therubber very flexible as to allow the pestle to be readily bottom of the cone is somwhat smaller at a short distancefrom the bottom, so as to remain on the mortar while movingthe pestle. May i, 1903.] THE INDIA RUBBER WORLD xxxix. Price JSIO. PREPAID. Crude Rubber andCompounding Ingredients. A Text Book of Rubber Manufacture. By HENRY C. PEARSON. IT is often a great convenience to have at hand,in convenient form for reference, a hook that willremind a man of something which he needs tomake use of in his work or business, without wait-ing to ransack his memory for it no matter how-well he may once have learned it. Crude Rub-ber and Compounding Ingredients has been de-signed to serve just such a purpose. In fact thebook was a gradual development of a manuscriptreference hook originally compiled by the authorfor his personal use alone. Finding how conven-ient it was to be able to turn to such a book, insteadof having to depend on memory alone for the in-formation it contained, the idea suggested itselfthat possibly others interested in the rubber indus-try might find these notes equally serviceable, andthis is why they have been developed into a he reception of the book has been encoura
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