Download or read book The Physiology Diseases of Hevea Brasiliensis, the Premier Plantation Rubber Tree (Classic Reprint) written by Thomas Petch and published by Forgotten Books. This book was released on 2017-11-20 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Physiology Diseases of Hevea Brasiliensis, the Premier Plantation Rubber Tree Medullary lines radiating through the wood. These lines Rays. Are, as a rule, not continuous from the centre to the circumference. Those which start from the centre end after a short distance, while others starting at various depths reach the circumference. These are the medullary mys. They are thin vertical plates of more or less cubical cells, wedged in between the longitudinal fibres and vessels. In the vertical direction, they extend only for a short distance; they are not continuous from the top to the bottom of the stem. When the stem is cut longitudinally they form what is known as the 'silver grain These medullary rays play an important part in the transport of food in the stem, as will be explained subsequently. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.