The chemist smiles at the childish efforts of alchemists but the mathematician finds the geometry of the Greeks and the arithmetic of the Hindoos as useful and admirable as any research of today.

Tags: chemist, smiles, childish, efforts, alchemists, mathematician, finds, geometry, Greeks

A class in arithmetic will be pleased to hear about the Hindoos and their invention of the "Arabic notation;" they will marvel at the thousands of years which elapsed before people had even thought of introducing into the numeral notation that Columbus-egg -- the zero; they will find it astounding that it should have taken so long to invent a notation which they themselves can now learn in a month.

Tags: class, arithmetic, pleased, hear, invention, Arabic, notation, marvel, thousands

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