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Page 394 - The tub contained 64-i pounds of butter, which lost 3| pounds in weight up to July 6, 1910. The weight of the container was the same at the end of the experiment as at the beginning. It was thoroughly soaked before the butter was packed in it and during the latter part of the period of observation it was wet in the storage room on account of melting ice on the floor. Of the five prints kept in cold storage and separately exposed (3) the loss ranged from 9.9 grams to 14.5 grams...
Page 12 - ... dispersed, the arrangement of density and of velocity of agitation of the meteorites was that of an isothermaladiabatic sphere. Later in its history, when the swarm had contracted, it was probably throughout in convective equilibrium. The actual mean velocity of the meteorites is determinable in a swarm of given mass, when expanded to a given extent. The total energy of agitation in an isothermal-adiabatic sphere is half the potential energy lost in the concentration from a condition of infinite...
Page 376 - My observations, as far as they extend at present, seem to be in favour of the opinion that the nebulae which give a gaseous spectrum, are systems possessing a structure, and a purpose in relation to the universe, altogether distinct and of another order from the great group of cosmical bodies to which our sun and the fixed stars belong.
Page 133 - Two variable organs are said to be co-related when the variation of the one is accompanied on the average by more or less variation of the other, and in the same direction. Thus the length of the arm is said to be co-related with that of the leg, because a person with a long arm has usually a long leg, and conversely.
Page 133 - It is easy to see that co-relation must be the consequence of the variations of the two organs being partly due to common causes. If they were wholly due to common causes, the co-relation would be perfect, as is approximately the case with the symmetrically disposed parts of the body.
Page 4 - ... when the supply of meteorites from outside has ceased, and when the velocities of agitation and distribution of meteorites in space have arranged themselves into a sub-permanent condition, only affected by secular changes. This examination will enable us to understand, at least roughly, the secular change as the swarm contracts, and will throw light on other questions. The foundation for the mathematical investigation in the paper is the hypothesis that a number of meteorites which were ultimately...
Page 335 - ... yellow. Sodium hypochlorite is said to give the yellow colouration on heating without any precipitate being formed. Chlorine-water produces no change, and bromine-water a light yellow precipitate, dissolving on heating. Potassium dichromate and permanganate are reduced by acid solutions of antipyrine. When a solution of iodine in potassium iodide is added to a solution of antipyrine, a precipitate is formed which disappears on agitation, leaving the solution colourless; but on further addition...
Page 12 - ... small ones have a tendency to rise. Accordingly, the various kinds are to some extent sorted according to size. An investigation is made in the paper of the mean mass of meteorites at various distances from the centre, both inside and outside of the isothermal sphere, and a figure illustrates the law of diminution of mean mass. It is also clear that the loss of the system through evaporation must fall more heavily on the small meteorites than on the large ones. After the foregoing summary, it...
Page 9 - ... thus the whole swarm would probably settle down to the condition of convective equilibrium throughout. It may be conjectured, then, that the best hypothesis in the early stages of the swarm is the isothermal-adiabatic arrangement, and later an adiabatic sphere. It has not seemed worth while to discuss this latter hypothesis in detail at present. The same investigation also gives the coefficient of viscosity of the quasi-gas, and shows that it is so great that the meteor-swarm must, if rotating,...