Nature, Volume 94Sir Norman Lockyer Macmillan Journals Limited, 1915 - Electronic journals |
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Page 17
... become extravasated , adding another to the small family of so - called fissure - eruptions . The value of a ... becoming crystallised into an inflexible dogma . In recent years De Vries has told us that species arise by sudden mutations ...
... become extravasated , adding another to the small family of so - called fissure - eruptions . The value of a ... becoming crystallised into an inflexible dogma . In recent years De Vries has told us that species arise by sudden mutations ...
Page 19
... become differ- entiated , primarily into two groups , which we distin- guish as somatic - cells and germ - cells respectively . From this point onwards evolution ceases to be a really continuous process , but is broken up into a series ...
... become differ- entiated , primarily into two groups , which we distin- guish as somatic - cells and germ - cells respectively . From this point onwards evolution ceases to be a really continuous process , but is broken up into a series ...
Page 21
... become En ' E , E2 Es E ' E ' Eg ... ... ... and as the change of environment must produce its effect upon the developing organism the series M , will have become M ' M1 M2 M3 My My Ma ... ... ... We must remember that throughout the ...
... become En ' E , E2 Es E ' E ' Eg ... ... ... and as the change of environment must produce its effect upon the developing organism the series M , will have become M ' M1 M2 M3 My My Ma ... ... ... We must remember that throughout the ...
Page 22
... become functional ; moreover , they disappear completely at later stages of development , when the conditions of life become still more different and their presence would be actually detrimental to their possessor . The embyro with the ...
... become functional ; moreover , they disappear completely at later stages of development , when the conditions of life become still more different and their presence would be actually detrimental to their possessor . The embyro with the ...
Page 25
... become separated from one another by the extinction of intermediate forms . The environmental stimuli ( including , of course , the body as part of its own environment ) may , however , act in two different ways ( 1 ) Upon the body ...
... become separated from one another by the extinction of intermediate forms . The environmental stimuli ( including , of course , the body as part of its own environment ) may , however , act in two different ways ( 1 ) Upon the body ...
Contents
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Common terms and phrases
Agriculture animals appears applied Australia British Association Carboniferous character chemical climate College colour comet course Cretaceous crust curve D'Arcy Thompson deal described discussion disease earth effect engineering enzymes expedition experiments fact Fisheries flora geological give given illustrated important increase India interesting investigation islands isostasy J. J. Thomson Joseph Larmor land larvæ lectures lines lithosphere London malaria material mathematical matter ment Mesozoic methods miles Museum natural observations Observatory obtained October organisation organism origin paper period Permian photographs Phylloglossum physical plants plates possible practical present Price problems produced Prof protozoa published rainfall recent records regard Royal scientific Society soil South South Africa species square miles stress summer belt surface telegraphy temperature theory tidal friction tion University various velocity Western Australia
Popular passages
Page 29 - Engineer, being the art of directing the great sources of power in Nature for the use and convenience of man...
Page 83 - The which observed, a man may prophesy, With a near aim, of the main chance of things As yet not come to life ; which in their seeds, And weak beginnings lie intreasured. Such things become the hatch and brood of time...
Page 39 - Rapid Methods for the Chemical Analysis of Special Steels, Steel-Making Alloys and Graphite...
Page 307 - October 12, 1908, a prize of $1,500 is offered for the best treatise 'On the Relation of Atmospheric Air to Tuberculosis.
Page 22 - In pursuance of this scheme the Commercial Intelligence Branch of the Board of Trade...
Page 3 - ... indication of a difference between the physical nature of the suboceanic and sub-continental parts of the crust is in rough correspondence with the conclusions previously suggested on quite other grounds. In...
Page 35 - Purely untutored humanity, it is true, interferes comparatively little with the arrangements of nature, and the destructive agency of man becomes more and more energetic and unsparing as he advances in civilization, until the impoverishment, with which his exhaustion of the natural resources of the soil is threatening him, at last awakens him to the necessity of preserving what is left, if not of restoring what has been wantonly wasted.
Page 248 - Instead of the circular hole, 'tis better to substitute an oblong hole, shaped like a long parallelogram, with its length parallel to the prism. For if this hole be an inch or two long and but a tenth or twentieth part of an inch broad or narrower, the light of the image will be as simple as before, or simpler, and the image will become much broader and therefore more fit to have experiments tried in its light than before.
Page 37 - Walbrook, and so into the Thames. And by these degrees was this fen or moor at length made main and hard ground, which before being overgrown with flags, sedges, and rushes, served to no use...
Page 43 - My first child was born on December 27th, 1839, and I at once commenced to make notes on the first dawn of the various expressions which he exhibited, for I felt convinced, even at this early period, that the most complex and fine shades of expression must all have had a gradual and natural origin.