Chapters in Modern BotanyC. Scribner's sons, 1893 - 201 Seiten |
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absorb acid gas adapted algæ animals ants bacteria become begin bend Bionomics bladders bladderwort botanists Botany branches butterwort carbonic acid carbonic acid gas cells Cephalotus chlorophyll chlorophyll grains circumnutation climbers climbing colour common cotyledons course Darlingtonia Darwin digestive Dionæa Drosera epidermis epiphytes evolution experiment explain fact ferment fertilisation flower-stalk flowers fluid fly-trap Francis Darwin fungi garden germinating glands green grow growth hairs important insectivorous plants insects interesting juice leaf leaflets leaves less lichens light Linnæus living matter ment microscope minute mistleto Myrmecodia naturalists nature nectaries Nepenthes observed organic palisade palisade cells parasites physiology pitcher plants Professor protoplasm radicle regard roots Sarracenia Schimper secretion seedlings seeds sensitive shoot side snails soil species spiral stalk starch stem stomata strange structure student substances sundew surface tendrils tentacles theory tion tissue transpiration trees tube turgescence twining Utricularia vegetable water-tension whole young
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Seite 148 - For, don't you mark? we're made so that we love First when we see them painted, things we have passed Perhaps a hundred times nor cared to see; And so they are better, painted — better to us, Which is the same thing. Art was given for that; God uses us to help each other so, 394 Lending our minds out.
Seite 141 - I am tempted to give one more instance showing how plants and animals, remote in the scale of nature, are bound together by a web of complex relations.
Seite 142 - Near villages and small towns I have found the nests of humble-bees more numerous than elsewhere, which I attribute to the number of cats that destroy the mice." Hence it is quite credible that the presence of a feline animal in large numbers in a district might determine, through the intervention first of mice and then of bees, the frequency of certain flowers in that district!
Seite 69 - It has often been vaguely asserted that plants are distinguished from animals by not having the power of movement. It should rather be said that plants acquire and display this power only when it is of some advantage to them...
Seite 203 - CHARLES SCRIBNER'S SONS, Publishers '"THIS Series, to be published by John Murray in * England and Charles Scribner's Sons in America, is the outgrowth of the University Extension movement, and is designed to supply the need so widely felt of authorized books for study and reference both by students and by the general public. The aim of these Manuals is to educate »rather than to inform. In their preparation, details...
Seite 97 - Seedlings, also, are destroyed in vast numbers by various enemies ; for instance, on a piece of ground three feet long and two wide, dug and cleared, and where there could be no choking from other plants, I marked all the seedlings of our native weeds as they came up, and out of 357 no less than 295, were destroyed, chiefly by slugs and insects.
Seite 128 - These thorns are hollow, and are tenanted by ants, that make a small hole for their entrance and exit near one end of the thorn, and also burrow through the partition that separates the two horns; so that the one entrance serves for both. Here they rear their young, and in the wet season every one of the thorns is tenanted; and hundreds of ants are to be seen running about, especially over the young leaves. If one of...
Seite 97 - If turf which has long been mown, and the case would be the same with turf closely browsed by quadrupeds, be let to grow, the more vigorous plants gradually kill the less vigorous, though fully grown plants ; thus out of twenty species growing on a little plot of mown turf (three feet by four) nine species perished, from the other species being allowed to grow up freely.