. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Vol. XII. No. 302. THE AGRICULTURAL NEWS, 379. RUBBER AND RUBBER PLANTING. Lock, Sc I>. Camliridye f'liirersiti/ J'resn, 1913. In view of the fact that interest in the rubber industry has extended within recent years beyond a comparatively small section of the community directly connected with production aud manufacture. Dr. Lock has attempted to present an introductory outline of our knowledge of rubber and rubber planting, in a form which is simple and yet com- prehensive. The author has succeeded in doing thi
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Vol. XII. No. 302. THE AGRICULTURAL NEWS, 379. RUBBER AND RUBBER PLANTING. Lock, Sc I>. Camliridye f'liirersiti/ J'resn, 1913. In view of the fact that interest in the rubber industry has extended within recent years beyond a comparatively small section of the community directly connected with production aud manufacture. Dr. Lock has attempted to present an introductory outline of our knowledge of rubber and rubber planting, in a form which is simple and yet com- prehensive. The author has succeeded in doing this and more, for the work is one which should be of great practical use to those who contemplate entering the industry either at home or abroad. In Chapter I, an account is given of the history of the use and cultivation of rubber, where interesting statistics relating to production will be found. la the next chapter the botanical sources of rubber are dealt with, and a useful description is given of the various latex [Toducing species. Of particular interest in this chapter is the information relat- ing to African and Asiatic rubbers, though the economic life of these species, it is feared, is gradually drawing to a close. In dealing with the physiology of latex production, in Chapter III, a large amount of attention is devoted, as might be expected, to the laticiferous system. The subject-matter is supplemented with illustrations showing the breaking down of the lateral and transverse cell walls in I/erea /,rasiliensis. In describing tapping experiments, Dr. Lock brings together most of the reliable results on the subject. Wound response is dealt with hrst, followed by duration of yields. The relation of yields to volume of bark is a subject of particular interest, and it is shown that in all probability latex is formed by active secretion of latex in existing lati- ciferous tissues. Seasonal variation receives attention next, followed by an account of variation in the yield o
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