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A History of Magic and Experimental Science, Volume 2 (of 2)
by Lynn ThorndikeThus Physica is more inclusive than the modern science of Physics, while Hugh evidently does not employ it in the specific sense of the art of medicine, of which the word physica was sometimes used in the medieval period. Hugh goes on to say that Physica is sometimes still more broadly interpreted to designate natural philosophy in contrast to logi..
Illustrations of the Huttonian Theory of the Earth
by John PlayfairA Very little attention to the phenomena of the mineral kingdom, is sufficient to convince us, that the condition of the earth's surface has not been the same at all times that it is at the present moment. When we observe the impressions of plants in the heart of the hardest rocks; when we discover trees converted into flint, and entire beds of lim..
The A.B.-Z. of our own nutrition
by Horace FletcherLuigi Cornaro suggested that all persons in his time ate more than was necessary; most persons ate twice as much as was good for them; and some, who were extravagantly gluttonous, ate ten times as much as was their most economic need; and Cornaro, who was a dissipated wreck at forty, reformed his manner of eating and lived to be a hundred to prove ..
A Preliminary Dissertation on the Mechanisms of the Heavens
by Mary SomervillePhysical astronomy is the science which compares and identifies the laws of motion observed on earth with the motions that take place in the heavens, and which traces, by an uninterrupted chain of deduction from the great principle that governs the universe, the revolutions and rotations of the planets, and the oscillations of the fluids at their s..
Gilbert Weather Bureau (Meteorology) for Boys
by A. C. GilbertIn the minds of most people a very silly notion prevails about the weather and the weather man. They have a general impression that the weather knows no laws—that it is lawless and reckless, fickle and changeable; that the weather man is a sort of conjurer, and by some mysterious gift he is able to prophesy things that most people know nothing abou..
Determination of the Atomic Weight of Cadmium
by Harry C. JonesThe method of weighing the more or less hygroscopic cadmium sulphate is open to criticism when employed in accurate work. The cadmium sulphate was placed in an open boat, dried, cooled over sulphuric acid, and weighed. It was again dried, cooled as before, and weighed. The second weighing could be quickly accomplished since the approximate weight w..
The honey-bee: its nature, homes and products
by William Hetherington HarrisIn these days of intense business-pressure, it is a good thing for men to cultivate hobbies. We say this, notwithstanding the fact that men with hobbies are likely to become bores, from thinking and talking too incessantly of their pet occupations, or are apt to run into extravagant expenditure of time and money, which could be better utilised. Now..
Apes and Monkeys: Their Life and Language
by R. L. GarnerThis volume is the natural product of many years devoted by the author to studying the speech and habits of monkeys. That naturally led him up to the study of the great apes. The matter contained in this work is chiefly a record of the tabulated facts gleaned from his special field of research. The aim in view is to convey to the casual reader a mo..