. The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material. ,but is usually nauseating and distasteful toothers. Like ordinary tea, it has a high per-centage of caffein. The term mate wasoriginally the name of the vessel in which thedrink was made. MATERIALISM, in philosophy, that sySrtem which denies the existence of a spiritualor immaterial principle in man, called themind, or soul, distinct from matter. The firsttheory of materialism was advanced by theearly Greek philosophers, who believed t
. The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material. ,but is usually nauseating and distasteful toothers. Like ordinary tea, it has a high per-centage of caffein. The term mate wasoriginally the name of the vessel in which thedrink was made. MATERIALISM, in philosophy, that sySrtem which denies the existence of a spiritualor immaterial principle in man, called themind, or soul, distinct from matter. The firsttheory of materialism was advanced by theearly Greek philosophers, who believed thateverything in the univei-se, even the souls ofmen and the gods, was made by the combina-tion of infinite numbers of atoms, accordingto mathematical proportions. Since its origin,the theory has been modified many times, andmodem materialism is closely associated withsome theories of evolution. It denies the ex-istence of the mind or soul as a spiritualentity and seeks to account for the activitiesof the mind by attributing them to the variousphysiological processes in the brain. Ma-terialism is the opposite of idealism. MATERIA MEDICA 2280 MATHEMATICS. MATERIA MEDICA, the Latin term formaterials of medicine, is the collective namegiven to the materials with which physiciansattempt to cure or alleviate the numerous dis-eases of the human body. See Medicike. ^\ yf ATHEMATICS, a gen-eral term for a numberof branches of learningthat deal with magni-tudes, numbers and quan-tities and their the jDrimary gradessmall pupils learning theelementary facts ofarithmetic are studyingmathematics, just astruly as the college stu-dent who solves intricateproblems in trigonom-etry and calculus. Between primary andcollege mathematics there are many othermathematical subjects of varying grades ofdifficulty. Divisions of Mathematics. The field is abroad one, but may be divided into threemain departments, as follows: (1) Arithmetic, that part of the sciencewhich deals with numbers, th
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