Nature, Volume 88Sir Norman Lockyer Macmillan Journals Limited, 1912 - Electronic journals |
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Page 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.
Page 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.
Page 326 - A RECORD OF THE WORK DONE IN SCIENCE, LITERATURE AND ART DURING THE SESSION 1905 1906 BY NUMEROUS SOCIETIES AND GOVERNMENT INSTITUTIONS.
Page 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...
Page 257 - Dr. DT MacDougal, director of the department of Botanical Research of the Carnegie Institution...
Page 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.
Page 68 - The invariants of the linear partial differential equation of the second order in two independent variables.
Page 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.
Page 89 - AN ACT TO PREVENT THE INTRODUCTION OR SPREADING OF INSECTS, PESTS AND DISEASES DESTRUCTIVE TO VEGETATION.
Page 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.