The Effects of Electricity in Paralytic and Rheumatic Affections, Gutta Serena, Deafness, Indurations of the Liver, Dropsy, Chlorosis, and Many Other Female Complaints, &c. Illustrated with Avariety of Cases which Haveoccurred at the Medico-electrical Rooms, No. 1, Leicester-street, Leicester-square. To which are Added, Some Observations on the Inefficacy of Metallic Tractors; and An Analysis of a Course of Lectures on Experimental Philosophy

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M. Allen, 1799 - Electrotherapeutics - 220 pages
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Page 103 - As the diameter of. the axle is to the diameter of the wheel, so is the power applied to the wheel, to the weight suspended on the axle.
Page 104 - This proportion teaches us that, when in equilibrium, the power is to the weight as the height of the plane is to its length.
Page 64 - Observations on Such Nutritive Vegetables as May Be Substituted in the Place of Ordinary Food in Times of Scarcity. "Extracted from the French of M. Parmentier.
Page 11 - ... Proposition V, he stated that "as the internal Air is necessary to the Action of the Effluvia, so is the external too," and in Proposition VI, we learn why he thought this should be the case: . . . the external Air appears to be necessary to carry the little Bodies . . . towards the Tube. For if by Heat and Rarefaction, consequent upon the Attrition, the Medium contiguous to the Tube be made specifically lighter; then of course, to keep up the balance, the remoter Air, which is denser, must press...
Page 100 - Centre of gravity is that point of a body about which all its parts are in equilibria, or balance each other; and consequently, if this point be supported, the whole body will be at rest, and cannot fall. An imaginary line drawn from the centre of gravity of any body towards the centre of the earth is called the line of direction. Bodies stand with firmness upon their bases, when this line falls within the base ; but if the line of direction falls without the base, the body will be overturned. Thus,...
Page 118 - Indeed nothing but the doctrine of the different refrangibility of the rays of light, could furniih a complete folution of this difficulty. De Dominis fuppofed that the red rays were thofe which had traverfed the leaft fpace in the inlide of a drop of water, and therefore retained more of their native force, and confe...
Page 63 - A Treatise showing the intimate Connexion that subsists between Agriculture and Chemistry, addressed to the Cultivators of the Soil, to the Proprietors of Fens and Mosses in Great Britain and Ireland, and te the Proprietors of West India Estates; and in 1799, The Principles of Chemistry applied to the Improvement of the Practice of Agriculture.
Page 166 - I fliouiil therefore very much fufpedt, that, the lining of thofe tubes in the quadruped is not nerve, but a kind of internal periofteum.
Page 156 - Politiano, by the fl'attery of my friends, or the accusations of my enemies, than I am by the shadow of my own body; for although that shadow may be somewhat longer in the morning and evening, than in the middle of the day, it does not induce me to think myself a taller man at those times than at noon. A good and wise man explores the recesses of his own heart daily, and...
Page 91 - EfTays,' depends upon this propofition, that when a body is at reft, and acted upon by three forces, they they will be as the three fides of a triangle parallel to the directions of the forces. Now this is true, when the three forces act at any point of a body ; whereas, confidering the lever as the body, the three forces act at different points, and therefore the principle, as applied by the author, is certainly not applicable. If, in this demonftration, we...