Relate a few more of the advantages obtained by a knowledge of Chemistry.
Many of the wonderful operations of Nature, and the changes which take place in substances around us, are, by its means, revealed to us. In every manufacture, art, or walk of life, the chemist possesses an advantage over his unskilled neighbor. It is necessary to the farmer and gardener, as it explains the growth of plants, the use of manures, and their proper application: and indispensable to the physician, that he may understand the animal economy, and the effects which certain causes chemically produce; and the nature of animal, vegetable, and mineral poisons. The study is, therefore, an invaluable branch in the education of youth: it is useful, not only in the active, but the moral life, by laying the foundation of an ardent and inquiring mind. Even an everyday walk in the fields can be productive of instruction, by a knowledge of it;—and let us always remember, that "Knowledge is Power."
Indispensable, necessary, not to be done without.
CHAPTER XIX.
Attraction, Tides, Gravity, Artesian Wells, Air, Aneroid Barometer, Ear-Trumpet, Stethoscope, Audiphone, Telephone, Phonograph, Microphone, Megaphone, Tasimeter, Bathometer, Anemometer, Chronometer.
What is Attraction?
By attraction is meant that property or quality in the particles of bodies which makes them tend toward each other.
Are there several kinds of attraction?