. Commercial botany of the nineteenth century. A record of progress in the utilisation of vegetable products in the United Kingdom, and the introduction of economic plants into the British colonies, during the present century. Botany, Economic; Botany. 28 COMMERCIAL BOTAXY. next five or six years it was so pei-sistently destroyed for the extraction of the milky juice that the tree was almost exterminated, and at the present time only a few trees, that are carefully preserved as curiosities, exist at Singapore. In 1847 it was plentiful at Penang, but a similar fate has overtaken it there. To co
. Commercial botany of the nineteenth century. A record of progress in the utilisation of vegetable products in the United Kingdom, and the introduction of economic plants into the British colonies, during the present century. Botany, Economic; Botany. 28 COMMERCIAL BOTAXY. next five or six years it was so pei-sistently destroyed for the extraction of the milky juice that the tree was almost exterminated, and at the present time only a few trees, that are carefully preserved as curiosities, exist at Singapore. In 1847 it was plentiful at Penang, but a similar fate has overtaken it there. To collect the milk the trees are cut down, and the bark. Gutta-percha {Bichopsisgutta). stripped off, when it flows readily, and is collected in a cocoa-nut shell, the spathe of a palm, or some similarly im- provised vessel, and formed into blocks or lumps of various sizes and shapes, the fluid quickly coagulating on exposure! to the air. The average quantity obtained from one tree is about twenty pounds, and as the imports into this country amount to between 40,000 and 60,000 cwt. annually, an enormous number of trees have to be sacriticed to supply the demand. In consequence of this destruction, and fear of the entire loss of the article to commerce, attention was. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jackson, John Reader, 1837-1920. London [etc. ] : Cassell & company, limited
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1890
