Scientific Papers: Physics, Chemistry, Astronomy, Geology: With Introductions, Notes and Illustrations

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P.F. Collier & son, 1910 - 367 pàgines
 

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Pàgina 260 - ... from the size of a pin's head to that of a pea ; scattered through a large body of sand or clay ; and in this state it is called by the Mandingoes sanoo munko,
Pàgina 4 - Taking him for all in all, I think it will be conceded that Michael Faraday was the greatest experimental philosopher the world has ever seen; and I will add the opinion, that the progress of future research will tend, not to dim or to diminish, but to enhance and glorify the labours of this mighty investigator.
Pàgina 175 - ... supply his natural warmth in that time. All the warm-blooded animals get their warmth in this way, by the conversion of carbon, not in a free state, but in a state of combination. And what an extraordinary notion this gives us of the alterations going on in our atmosphere. As much as 5,000,000 pounds, or 548 tons, of carbonic acid is formed by respiration in London alone in twenty-four hours.
Pàgina 89 - I claim the privilege of speaking to juveniles as a juvenile myself. I have done so on former occasions, and, if you please, I shall do so again. And, though I stand here with the knowledge of having the words I utter given to the world, yet that shall not deter me from speaking in the same familiar way to those whom I esteem nearest to me on this occasion. And now, my boys and girls, I must first tell you of what candles are made. Some are great curiosities. I have here some bits of timber, branches...
Pàgina 176 - So are we made dependent not merely upon our fellow-creatures, but upon our fellow-existers, all Nature being tied together by the laws that make one part conduce to the good of another. There is another little point which I must mention before we draw to a close — a point* which concerns the whole of these operations, and most curious and beautiful it is to see it clustering upon and associated with the bodies that concern us—oxygen, hydrogen, and carbon, in different states of their existence.
Pàgina 321 - A Description of a Machine for finding the Numerical Roots of Equations and tracing a Variety of Useful Curves," of which a short notice appears in the British Association Report for that year.
Pàgina 355 - From the earliest geological times the great area of deposit has been, as it still is, the marginal belt of sea-floor skirting the land. It is there that nature has always strewn "the dust of continents to be.
Pàgina 254 - ... pressure upon it than it could have done without such an alteration of the freezing-point. Pressure furthers in this case, as is usual in the interaction of various natural forces, the occurrence of a change, that is fusion, which is favourable to the development of its own activity. In Sir W. Thomson's experiments, water and ice were confined in a closed vessel, from which nothing could escape. The case is somewhat different when, as with glaciers, the water disseminated in the compressed ice...
Pàgina 362 - They show that the history of every country has been long and eventful ; that, in short, hardly any portion of the land has reached its present condition, save after a protracted series of geological revolutions. One of the most obvious and not the least striking features in the architecture of the land is the frequency with which the rocks, though originally horizontal, or approximately so, have been tilted up at various angles, or even placed on end. At first it might be supposed that these disturbed...

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