Nature, Том 88Sir Norman Lockyer Macmillan Journals Limited, 1912 |
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acid agricultural algæ animals appears Archibald Geikie Astronomical birds botany British carbon character chemical chemistry College colour comet committee course crustaceans Darwin December described discussion disease edition electric engineering ephemerides Eutheria evidence examination experiments fact francs furnace geological give given illustrated important India institutions interesting investigation J. J. Thomson laboratory large number larvæ lecture London mammals mathematics matter ment mental method microscope millimetre Museum nature November November 16 November 23 observations Observatory obtained October paper period photographs physical plants plates present pressure Price prize probably problems produced Prof published quartz radium recent recorded reference regard Royal Society schools scientific shown sleeping sickness Solar Solar Physics South species spectrum stars suggested surface temperature theory thorium tion trypanosome University various volume
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Стр. 193 - Now let us suppose that such a vessel is divided into two portions, A and B, by a division in which there is a small hole, and that a being, who can see the individual molecules, opens and closes this hole, so as to allow only the swifter molecules to pass from A to B, and only the slower ones to pass from B to A. He will thus, without expenditure of work, raise the temperature of B and lower that of A, in contradiction to the second law of thermodynamics.
Стр. 8 - When on board HMS Beagle, as naturalist, I was much struck with certain facts in the distribution of the organic beings inhabiting South America, and in the geological relations of the present to the past inhabitants of that continent.
Стр. 326 - A RECORD OF THE WORK DONE IN SCIENCE, LITERATURE AND ART DURING THE SESSION 1905 1906 BY NUMEROUS SOCIETIES AND GOVERNMENT INSTITUTIONS.
Стр. 8 - I had been deeply impressed by discovering in the Pampean formation great fossil animals covered with armour like that on the existing armadillos ; secondly, by the manner in which closely allied animals replace one another in proceeding southwards over the Continent ; and thirdly, by the South American character of most of the productions of the Galapagos archipelago, and more especially by the manner in which they...
Стр. 257 - Dr. DT MacDougal, director of the department of Botanical Research of the Carnegie Institution...
Стр. 193 - It is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.
Стр. 68 - The invariants of the linear partial differential equation of the second order in two independent variables.
Стр. 313 - London should be recognised and accepted as a great public institution,' and that 'it is fitting and right . . . that such an institution should have for its headquarters permanent buildings appropriate in design to its dignity and importance, adequate in extent, and specially constructed for its purposes, situated conveniently for the work it has to do, bearing its name and under its own control.
Стр. 89 - AN ACT TO PREVENT THE INTRODUCTION OR SPREADING OF INSECTS, PESTS AND DISEASES DESTRUCTIVE TO VEGETATION.
Стр. 193 - ... and energised by two alternating electric currents of widely different frequencies, so that the moving extremities of the two beams are caused to sweep synchronously over the whole of the required surfaces within the one-tenth of a second necessary to take advantage of visual persistence.