An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página ix
... Arrangement 114 · 108 - 110 - 112 Anatomy - 121 Veins - 129 25 Forms - 134 Petiole - 138 Phyllodia · 140 SECT . V. Laticiferous Tissue , or Cinenchyma SECT . VI . Spurious Elementary Spiral Vessels · - 27 Ducts - 33 - 35 Tendril - 140 ...
... Arrangement 114 · 108 - 110 - 112 Anatomy - 121 Veins - 129 25 Forms - 134 Petiole - 138 Phyllodia · 140 SECT . V. Laticiferous Tissue , or Cinenchyma SECT . VI . Spurious Elementary Spiral Vessels · - 27 Ducts - 33 - 35 Tendril - 140 ...
Página 4
... arrangement of the molecules at various points , perhaps a small difference in the thickness of the membrane , causes a different refraction of light , precisely in the same way as fibres are visible in badly melted glass . " Valentin ...
... arrangement of the molecules at various points , perhaps a small difference in the thickness of the membrane , causes a different refraction of light , precisely in the same way as fibres are visible in badly melted glass . " Valentin ...
Página 6
... arrangement is by no means uniform ( see same fig . b ) . * Elementary Fibre may be compared to hair of inconceiv- able fineness , but it is extremely variable in size . In Pleurothallis ruscifolia , where it is large , I find it so ...
... arrangement is by no means uniform ( see same fig . b ) . * Elementary Fibre may be compared to hair of inconceiv- able fineness , but it is extremely variable in size . In Pleurothallis ruscifolia , where it is large , I find it so ...
Página 15
... arranged that when viewed laterally it resembles the bricks in a wall ; whence its name . ( Plate I. fig . 7. ) 8. The compressed ; in the cuticle of all plants . Here the bladders are often so compressed as to appear to be only a ...
... arranged that when viewed laterally it resembles the bricks in a wall ; whence its name . ( Plate I. fig . 7. ) 8. The compressed ; in the cuticle of all plants . Here the bladders are often so compressed as to appear to be only a ...
Página 27
... arranged more or less in a spiral direction . Such appears to me to be the most accurate mode of de- scribing this kind of tissue , upon the exact nature of which anatomists are , however , much divided in opinion ; some be- lieving ...
... arranged more or less in a spiral direction . Such appears to me to be the most accurate mode of de- scribing this kind of tissue , upon the exact nature of which anatomists are , however , much divided in opinion ; some be- lieving ...
Índice
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19 | |
27 | |
110 | |
121 | |
146 | |
277 | |
289 | |
455 | |
461 | |
466 | |
467 | |
473 | |
478 | |
481 | |
506 | |
302 | |
309 | |
330 | |
345 | |
389 | |
429 | |
448 | |
525 | |
534 | |
544 | |
552 | |
571 | |
587 | |
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Palavras e frases frequentes
Adolphe Brongniart albumen anther apex appears axis bark base become body botanists Botany bracts branches buds bundles called calyx Cand Candolle carbonic acid carpels cause cavity cells cellular tissue centre chalaza character colour common considered consists containing corolla cotyledons cyclosis developement dicotyledons direction disk distinct Dutrochet elongated embryo epidermis exist external extremity fibres filament fleshy flowers fluid foramen fruit glands grains green growing hairs hilum inches integument kind latex layers leaf leaflets leaves light Linnæus lobes margin matter medullary rays membrane Mirbel monocotyledons nature nitrogen nucleus observed organs ovarium ovary ovule oxygen parenchyma pericarp petals petiole pistil pith placenta plants Plate plumula pollen pollen tube produced quantity radicle Raphides remarked roots round seeds separate side sometimes species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow
Passagens conhecidas
Página 593 - Dr. Ure's Dictionary of Arts, Manufactures, and Mines : Containing a clear Exposition of their Principles and Practice.