Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

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Infant Mortality

one of those social problems which has troubled humanitarians for the past century, and the statesmen in those countries where the birth rate now tends to drop below in which he served, he became secretary the death rate. So far as records show, of the Société Nationale de Musique, back to the most ancient times , infant while its president was the famous musician César Franck. When the latter mortality has always been very heavy, died in 1890 D'Indy became president. which, indeed, is true of all animal life. inevitable natural incident, not without resident. For centuries this was regarded as an its beneficent aspect, since it was bevive. After the industrial revolution, lieved that only the unfit failed to surlieved that only the unfit failed to surcaused by the invention of steam driven In 1906 he made a tour of the United States, conducting his own works with the Boston Symphony Orchestra. Although he has written two or three operas his best compositions have been for instrumental music . He has also written biographies and books on musical instruction.

INERTIA (in-er'she-ä), the incapability of matter to change its state, whether that be one of motion or rest. If in motion, it will continue so forever unless some counteractive force, like that of gravity, act upon it. If at rest, it will ever remain so unless a counteractive impulse set it in motion. The resistance which, especially at first, it gives to such a force operating to move it is called vis the power of inertia.

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