Chemist and physicist. Born 1627; died 1691. First to distinguish correctly the difference between a mixture and a compound. Systematized wet analysis. Demonstrated the value of Bacon's system. Inaugurated the employment of vegetable color tests to ascertain acidity and alkalinity. Compiled the earliest table of specific gravity for various waters. Improved the air pump. Experimented in pneumatics. Formulated the law of gases which bears his name.
This dictionary contains not only definitions and explanations of every subject in Religion, Scripture, tradition, doctrine, morals, sacraments, rites, customs, devotions and symbolism, but also accounts of the Church in every continent, country, diocese; missions, notable Catholic centers, cities, and places with religious names; religious orders, church societies, sects and false religions. It has brief articles also on historical events and personages, on the Old Testament and New, and on popes, prelates, priests, men and women of distinction, showing what the Church has done for civilization and correcting many errors which have hitherto passed for history.Wikipedia
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