Abstract of Proceedings and Transactions of the Bedfordshire Natural History Society, and Field Club

Abstract of Proceedings and Transactions of the Bedfordshire Natural History Society, and Field Club

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1877 edition. Excerpt: ...scales surrounding the bulb. In Lythrum salicaria, the handsome loose-strife of our ditches and brooksides, the leaves are free from them, but they can be readily seen in the young stems, studding the pith in the centre and the cellular tissue of the cortex. In the sepals of the same plant they are numerous, but the petals and the other parts of the flower do not display them. In cellular tissue they may also be seen in the fronds of duckweed, in the berries of Tamus (Bryony) and Arum, and the petals of certain of the Orchis family, notably Neottia Nidus-avis. The leaves of the wall pellitory contain an interesting arrangement of them. In the leaves and legumes of many leguminosee they appear in rows or chains of cells running along the nerves, each cell containing one. The leaf of Veratrum niger forms a very interesting object for examination from the great regularity with which the cells are filled with them. The plant crystals, whichever form they take, are easily prepared for microscopic observation. The leaf or other part which is supposed to contain them, if not soft enough to be smashed by pressure between two pieces of glass, should be scraped and mashed to pulp in a little water on a glass slide, covered with a piece of thin glass and examined by a low power. If the form of crystal present be that of the raphides, the peculiar needle-like bodies will be seen scattered all over the field of the instrument, certain bundles being almost entire, others partially disintegrated, and some completely broken up. The sphajraphides and crystal prisms would only be by such treatment loosened from their cells or the tissue in which they have been imbedded, and could be easily picked out by a bristle or fine needle. By cutting thin sections of the...show more

Product details

  • Paperback | 88 pages
  • 189 x 246 x 5mm | 172g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236676637
  • 9781236676634