A Short History of the Progress of Scientific Chemistry in Our Own Times
The book A Short History of the Progress of Scientific Chemistry in Our Own Times was written by author William a William Augustus Tilden Here you can read free online of A Short History of the Progress of Scientific Chemistry in Our Own Times book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Short History of the Progress of Scientific Chemistry in Our Own Times a good or bad book?
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It has also long been known that PROGRESS OF SCIENTIFIC CHEMISTRY 177 sweet and bitter almonds in the dry state are both without special odour, but that when the bitter almond is crushed in the presence of water, the characteristic volatile essence, consisting of benzal- dehyd, begins immediately to be formed. It was Liebig who discovered that the bitter almond con- tains a crystalline substance, amygdalin, C 20 H 27 NO n, which, in contact with a peculiar soluble albuminous matter existing in ...both sweet and bitter almonds, is resolved by the assumption of the elements of water into glucose, prussic acid, and benzaldehyd. The pungent oil of mustard is developed in an entirely similar way. In the " pepsin " of the animal stomach there is another example of a soluble enzyme, which in this case is specially active in causing the degradation and simplification of the complex albuminoids of food, converting them into soluble materials called "peptones, " which probably pass directly into the blood and are assimilated.
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