Scientific Opinion: A Weekly Record of Scientific Progress at Home & Abroad, Volume 3

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Página 117 - Geography of India. Comprising an account of British India, and the various states enclosed and adjoining. Fcap. pp. 250. 2s. Geological Papers on Western India. Including Cutch, Scinde, and the south-east coast of Arabia. To which is added a Summary of the Geology of India generally. Edited for the Government by HENRY J.
Página 96 - But let us return to our dust. It is needless to remark that it cannot be blown away by an ordinary bellows ; or, more correctly, the place of the particles blown away is in this case supplied by others ejected from the bellows, so that the track of the beam remains unimpaired. But if the nozzle of a good bellows be filled with cotton wool not too tightly packed, the air urged through the wool is filtered of its floating matter, and it then forms a clean band of darkness in the illuminated dust....
Página 235 - PRINCIPLES of MECHANISM, designed for the Use of Students in the Universities, and for Engineering Students generally.
Página 133 - The seeds of things seem to lie latent in the air, ready to appear and produce their kind, whenever they light on a proper matrix. The extremely small seeds of fern, mosses, mushrooms, and some other plants are concealed and wafted about in the air, every part whereof seems replete with seeds of one kind or other. The whole atmosphere seems alive. There is everywhere acid to corrode, and seed to engender. Iron will rust, and mould will grow in all places.
Página 235 - A General System of Descriptive and Analytical Botany : I. Organography, Anatomy, and Physiology of Plants ; II. Iconography, or the Description and History of Natural Families. Translated from the French of E.
Página 96 - By its means, so far as the germs are concerned, the air of the highest Alps may be brought into the chamber of the invalid.
Página 12 - Kant, as the originator of that "cosmic gas theory," as the Germans somewhat quaintly call it, which is commonly ascribed to Laplace. With respect to spontaneous generation, while admitting that there is no experimental evidence in its favour, Professor Haeckel denies the possibility of disproving it, and points out that the assumption that it has occurred is a necessary part of the doctrine of Evolution. The fourteenth lecture, on " Schopfungs-Perioden und Schopfungs-Urkunden," answers pretty much...
Página 101 - In other words, very little of the energy expended in the flash of the fire-fly is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight...
Página 95 - The notion was expressed by Kircher, and favoured by Linnaeus, that epidemic diseases are due to germs which float in the atmosphere, enter the body, and produce disturbance by the development within the body of parasitic life. While it was still struggling against great odds, this theory found an expounder and a defender in the President of this Institution. At a time when most of his medical brethren considered it a wild dream, Sir Henry Holland contended that some form of the germ theory was probably...
Página 96 - On expiring this air through a glass tube, its freedom from floating matter is at once manifest. From the very beginning of the act of expiration the beam is pierced by a black aperture. The first puff from the lungs abolishes the illuminated dust, and puts a patch of darkness in its place; and the darkness continues throughout the entire course of the expiration. When the tube is placed below the beam and moved to and fro, the same smoke-like appearance as that obtained with a flame is observed....

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