Scientific Opinion, Том 31870 |
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Страница 10
... complete collection of the natural products of the neighbourhood , properly arranged and carefully marked with . their localities , and , if possible , named . A naturalist is work- ing at a particular department of the British fauna ...
... complete collection of the natural products of the neighbourhood , properly arranged and carefully marked with . their localities , and , if possible , named . A naturalist is work- ing at a particular department of the British fauna ...
Страница 30
... complete the lectures for the present collegiate year , the former gentleman by a course of six lectures on the nature and treatment of new growths , and the latter by a course of three lectures on the minute anatomy of the eye , in ...
... complete the lectures for the present collegiate year , the former gentleman by a course of six lectures on the nature and treatment of new growths , and the latter by a course of three lectures on the minute anatomy of the eye , in ...
Страница 32
... complete collections from various localities on the Pacific coast , give quite unexpected results , since no species are found to be identical , while even the genera and families show remark- able contrasts . Thus the numerous genera ...
... complete collections from various localities on the Pacific coast , give quite unexpected results , since no species are found to be identical , while even the genera and families show remark- able contrasts . Thus the numerous genera ...
Страница 33
... complete physiological explanation of it ) this is what I have observed respecting it . The walls of the anther - cells are usually of some shade of purple , but are so very thin and pellucid , that when distended with mature pollen the ...
... complete physiological explanation of it ) this is what I have observed respecting it . The walls of the anther - cells are usually of some shade of purple , but are so very thin and pellucid , that when distended with mature pollen the ...
Страница 34
... complete and per- manent ; so that the hypothesis of Plato , that the prototype even of man was hermaphrodite , may one day be proved to be a fact ! -A Paper read before the Horticultural Society . PHOTOGRAPHY ON CANVAS . E were ...
... complete and per- manent ; so that the hypothesis of Plato , that the prototype even of man was hermaphrodite , may one day be proved to be a fact ! -A Paper read before the Horticultural Society . PHOTOGRAPHY ON CANVAS . E were ...
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acetic ether acid action alizarine ammonia animals apparatus appearance augite beds body British carbon carbonic acid carboniferous chair character chemical coal College colour comets communication containing corresponding deposits described Ditto elected enstatite evidence examination exhibited existence experiments fact favourable flowers fossil geological geology give heat hydrogen insects interest iron John Herschel Journal lectures letter light London matter means Medical meeting memoir ment Messrs meteors method microscope mineral Miocene Museum Natural History Neocomian notice object observed obtained organic oxide paper Paris perihelion period phenomena plants pollen portion present president produced Prof Professor published quantity R. A. Proctor recent referred regard remarks rocks Royal Horticultural Society Royal Institution Royal Society Science SCIENTIFIC OPINION seen species specimens spectrum stamens substance surface temperature terraces tion tube Uniformitarianism usnic acid
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Страница 137 - The seeds of things seem to lie latent in the air, ready to appear and produce their kind, whenever they light on a proper matrix. The extremely small seeds of fern, mosses, mushrooms, and some other plants are concealed and wafted about in the air, every part whereof seems replete with seeds of one kind or other. The whole atmosphere seems alive. There is everywhere acid to corrode, and seed to engender. Iron will rust, and mould will grow in all places.
Страница 99 - Tour discovered the yeast plant, a living organism, which, when placed in a proper medium, feeds, grows, and reproduces itself, and in this way carries on the process which we name fermentation. Fermentation was thus proved to be a product of life instead of a process of decay.
Страница 99 - ¡Hun: focus of the electric beam and inhale the dirt revealed there. Nor is the disgust abolished by the reflection that, although we do not see the nastiness, we are churning it in our lungs every hour and minute of our lives. There is no respite to this contact with dirt; and the wonder is, not that we should from time to time suffer from its presence, but that so small a portion of it would appear to be deadly to man.
Страница 294 - The ordinary gaseous and ordinary liquid states are, in short, only widely separated forms of the same condition of matter, and may be made to pass into one another by a series of gradations so gentle that the passage shall nowhere present any interruption or breach of continuity. From carbonic acid as a perfect gas to carbonic acid as a perfect liquid, the transition we have seen may be accomplished by a continuous process, and the gas and liquid are only distant stages of a long series of continuous...
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Страница 105 - In the case of an ordinary gaslight the best experiments show that not more than one or two per cent of the radiant energy consists of visible rays, the rest is either invisible heat or actinism ; that is to say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making objects visible.
Страница 99 - ... birth to an oak competent to produce a whole crop of acorns, each gifted with the power of reproducing its parent tree ; and as thus from a single seedling a whole forest may spring ; so, it is...