The Wonders of Plant Life Under the MicroscopeG.P. Putnam's sons, 1883 - 248 páginas |
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Página 24
... movement of motile spores , are effected under the controlling influence of the violet and ultra - violet rays . All the solar vibrations which go to make up white light , therefore , appear to possess chemical power , though the matter ...
... movement of motile spores , are effected under the controlling influence of the violet and ultra - violet rays . All the solar vibrations which go to make up white light , therefore , appear to possess chemical power , though the matter ...
Página 50
... movement ; and this is especially seen in those whose frustules are of a long narrow form . *** The motion is of a peculiar kind , being usually a series of jerks which carry forward the frustule in the direction of its length , and ...
... movement ; and this is especially seen in those whose frustules are of a long narrow form . *** The motion is of a peculiar kind , being usually a series of jerks which carry forward the frustule in the direction of its length , and ...
Página 51
... movement at A D с FIG . 16 . DIATOMS GROWING ON STIPES . A , Licomorpha ; B , Achnanthes ; C , Bacillaria ; D , Pododiscus . [ From Nature and after Henfrey and Carpenter . ] " very regular intervals . In either case , the motion is ...
... movement at A D с FIG . 16 . DIATOMS GROWING ON STIPES . A , Licomorpha ; B , Achnanthes ; C , Bacillaria ; D , Pododiscus . [ From Nature and after Henfrey and Carpenter . ] " very regular intervals . In either case , the motion is ...
Página 81
... movements as the membranes are ruptured , the fibres squirming like a bunch of worms . As is the case in the move- ments of all other plants , it seems to have some- thing to do with reproduction , and is useful in scattering spores ...
... movements as the membranes are ruptured , the fibres squirming like a bunch of worms . As is the case in the move- ments of all other plants , it seems to have some- thing to do with reproduction , and is useful in scattering spores ...
Página 122
... movements of plants which bear a close relation to the processes of reproduction that will be mentioned later ; but a few may be noticed here There are also spontaneous movements of plants which are merely due to growth , or the change ...
... movements of plants which bear a close relation to the processes of reproduction that will be mentioned later ; but a few may be noticed here There are also spontaneous movements of plants which are merely due to growth , or the change ...
Otras ediciones - Ver todas
The Wonders of Plant Life Under the Microscope Sophia M'Ilvaine Bledsoe Herrick Vista completa - 1906 |
Términos y frases comunes
aggregation algæ animal anther antheridia antherozoids archegonia beautiful bend called cause cell sap cell wall cellular cellulose chemical chlorophyll chlorophyll bodies close color conjugation corn curious Darwin delicate desmids diams diatoms digestive disk Drosera epidermal fermentation ferns fertilization filaments flower fluid frond functions fungi fungus gemmæ germs glands green grow growth hairs honey inflection inner insect insectivorous plants jelly layers of cells leaf leaves living lobes Marchantia mass matter ment microscope mode moisture mosses mycelium Nature orchids organic ovary ovule oxygen peculiar pedicel penetrate petals petiole pistil pitcher plants pollen grains pollen tube pollinia portion possess produced prothallium protococcus protoplasm reproduction root-hairs roots Sachs Sarracenia secretion seen side species spiral sporangia spores sporogonium stamens stem stigma stomata structure substance surface takes place tentacles tiny tion tissue Torula trichomes utricles Utricularia varieties vegetable cell vessels viscid wonderful
Pasajes populares
Página 70 - The universality of the appearance of these simple forms of fungi upon all spots favourable to their development, has given rise to the belief that they are spontaneously produced by decaying substances, but there is no occasion for this mode of accounting for it, since the extraordinary means adopted by nature for the production and diffusion of the germs of these plants adequately suffices to explain the facts of the case. "The number of sporules which any one fungus may develope is almost incalculable...
Página 27 - I see no reason whatever that justice may not be done to the few fragments of soul and tatters of understanding which they may really possess. I have sometimes perhaps felt a little uneasy at Exeter Change from contrasting the monkeys with the...
Página 27 - I feel myself so much at my ease about the superiority of mankind — I have such a marked and decided contempt for the understanding of every baboon I have yet seen— I feel so sure that the blue ape without a tail will never rival us in poetry, painting, and music, that I see no reason whatever why justice may not be done to the few fragments of soul and tatters of understanding which they may really possess.
Página 203 - ... the flower ; and that the object of the flap and its sugar is also to attract insects, but with a very different result, cannot be doubted. It is hence conceivable that this marvellous plant lures insects to its flowers for one object, and feeds them while it uses them to fertilize itself, and that, this accomplished, some of its benefactors are thereafter lured to its pitchers for the sake of feeding itself...