An Introduction to BotanyLongman, 1839 - 594 páginas |
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Página 1
... cavities , separated by a membranous substance ; more exactly examined , it is found that these cavities have a variety of different figures , and that each is closed up from those that surround it ; if the inquiry is carried still ...
... cavities , separated by a membranous substance ; more exactly examined , it is found that these cavities have a variety of different figures , and that each is closed up from those that surround it ; if the inquiry is carried still ...
Página 3
... cavities of the cells ; and is appa- rently an universal occurrence where membrane becomes thickened . But the matter added to membrane is often so homogeneous as to offer no trace of its being deposited concentrically , even when ...
... cavities of the cells ; and is appa- rently an universal occurrence where membrane becomes thickened . But the matter added to membrane is often so homogeneous as to offer no trace of its being deposited concentrically , even when ...
Página 5
... cavity of the cells , and closed externally by the membrane itself . He adds , that when dotted tissue is in contact , these passages are placed exactly opposite to each other . ( Martius Palm . Anat . v . col . 2. ) The latter is ...
... cavity of the cells , and closed externally by the membrane itself . He adds , that when dotted tissue is in contact , these passages are placed exactly opposite to each other . ( Martius Palm . Anat . v . col . 2. ) The latter is ...
Página 9
... cavities , separated by partitions ( fig . 3. ) . These little cavities are the inside of bladders of cellular tissue ; and the partitions seem to be caused by the cohesion of their sides , for if we boil the pith for a short time , the ...
... cavities , separated by partitions ( fig . 3. ) . These little cavities are the inside of bladders of cellular tissue ; and the partitions seem to be caused by the cohesion of their sides , for if we boil the pith for a short time , the ...
Página 12
... cavity in communication with that of the joint which bears it ; as the branch lengthens , a contraction is observable at the line of insertion , which contraction is directed towards the interior of the cell , and chokes up the green ...
... cavity in communication with that of the joint which bears it ; as the branch lengthens , a contraction is observable at the line of insertion , which contraction is directed towards the interior of the cell , and chokes up the green ...
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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 cloth colour common consists containing corolla cotyledons cyclosis developement dicotyledons direction disk Dutrochet Edition embryo epidermis exist 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 Loudon 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 species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow