EP'ILOGUE, _a short poem or speech at the end of a play_.

ETYMOL'OGY (Gr. _et'umon_, true source), _a part of grammar; the science of the derivation of words_.

EU'LOGY, _praise, commendation_.

GENEAL'OGY (Gr. n. _gen'os_, birth), _history of the descent of families_.

GEOL'OGY (Gr. n. _ge_, the earth), _the science which treats of the internal structure of the earth_.

MINERAL'OGY, _the science of minerals_.

MYTHOL'OGY (Gr. n. _mu'thos_, a fable), _a system or science of fables_.

ORNITHOL'OGY (Gr. n. _or'nis, or'nithos_, a bird), _the natural history of birds_.

PATHOL'OGY (Gr. n. _path'os_, suffering), _that part of medicine which treats of the causes and nature of diseases_.

PHILOL'OGY (Gr. _phil'os_, loving, fond of), _the science which treats of languages_.

PHRENOL'OGY (Gr. n. _phren_, the mind), _the art of reading the mind from the form of the skull_.

PHYSIOL'OGY (Gr. n. _phu'sis_, nature), _the science which treats of the organism of plants and animals_.

PRO'LOGUE, _verses recited as introductory to a play_.

PSYCHOL'OGY (Gr. n. _psu'che_, the soul), _mental philosophy; doctrine of man's spiritual nature_.

SYL'LOGISM, _a form of reasoning consisting of three propositions_.

TAUTOL'OGY (Gr. _tau'to_, the same), _a repet.i.tion of the same idea in different words_.

TECHNOL'OGY (Gr. n. _tech'ne_, art), _a description of the arts_.

THEOL'OGY. See _theos_.

TOXICOL'OGY (Gr. n. _tox'icon_, poison) _the science which treats of poisons and their effects_.

ZOOL'OGY (Gr. n. _zo'on_, an animal), _that part of natural history which treats of animals_.

17. MET'RON (et???) _a measure_.

ME'TER, _arrangement of poetical feet; a measure of length_.

MET'RIC, _denoting measurement_.

MET'RICAL, _pertaining to meter_.

ANEMOM'ETER (Gr. n. _an'emos_, the wind), _an instrument measuring the force and velocity of the wind_.

BAROM'ETER (Gr. n. _ba'ros_, weight), _an instrument that indicates changes in the weather_.

DIAM'ETER, _measure through anything_.

GEOM'ETRY (Gr. n. _ge_, the earth), _a branch of mathematics_.

HEXAM'ETER (Gr. _hex_, six), _a line of six poetic feet_.

HYDROM'ETER (Gr. n. _hu'dor_, water), _an instrument for determining the specific gravities of liquids_.

HYGROM'ETER (Gr. adj. _hu'gros_, wet), _an instrument for measuring the degree of moisture of the atmosphere_.

PENTAM'ETER (Gr. _pen'te_, five), _a line of five poetic feet_.

PERIM'ETER, _the external boundary of a body or figure_.

SYM'METRY, _the proportion or harmony of parts_.

THERMOM'ETER (Gr. adj. _ther'mos_, warm), _an instrument for measuring the heat of bodies_.

TRIGONOM'ETRY (Gr. n. _trigo'non_, a triangle), _a branch of mathematics_.

18. MON'OS (????), _sole, alone_.

MON'ACHISM, _the condition of monks; a monastic life_.

MON'AD, _something ultimate and indivisible_.

MON'ASTERY, _a house of religious retirement_.

MONK (Gr. n. _mon'achos_), _a religious recluse_.

MONOG'AMY (Gr. n. _gam'os_, MARRIAGE), _the marriage of one wife only_.

MON'OLOGUE (Gr. n. _log'os_), _a speech uttered by a person alone_.

MONOMA'NIA (Gr. n. _ma'nia_, madness), _madness confined to one subject_.

MONOP'OLY (Gr. v. pol'ein, to sell), _the sole power of selling anything_.

MONOSYL'LABLE, _a word of one syllable_.

MON'OTHEISM (Gr. n. _the'os_, G.o.d), _the belief in the existence of only one G.o.d_.

MON'OTONE, _uniformity of tone_.

MONOT'ONY, _sameness of sound; want of variety_.