ANTHROPOMORPHISM. The attributing of human characteristics to natural, supernatural, or divine beings. ANTHROPOMETRY. Science of measurement of the human body. ARTIFACT. Any artificial product. APHASIA. Impairment or lose of the ability to understand or use speech. ASSOCIATIONISM. The psychological theory which regards the laws of association as the fundamental laws of mental action and development. ATAVISTIC. Pertaining to reversion through the influence of heredity to remote ancestral characteristics. ATAXIC. Pertaining to inability to coördinate voluntary movements; irregular. CALAMO-PAPYRUS. Reed papyrus or pen-paper. CATABOLISM. _See_ METABOLISM. CATHARSIS. Purgation or cleansing. Aristotle's esthetic theory that little renders immune for much. CEREBRATION. Brain action, conscious or unconscious. CHOREA. St. Vitus's dance; a nervous disease marked by irregular and involuntary movements of the limbs and face. CHRESTOMATHY. A collection of extracts and choice pieces. CHRISTENTHUM. The Christian belief; the spirit of Christianity. COMMANDO EXERCISES. Gymnastic exercises whose order is dependent upon the spoken command of the director. CORTEX. The gray matter of the brain, mostly on its surface. CORTICAL. Pertaining to the cortex. CRANIOMETRY. The measurement of skulls. CRYPTOGAMOUS. Having an obscure mode of fertilization; or, of plants that do not blossom. CULTUS. A system of religious belief and worship. DEUTSCHENTHUM. The spirit of the German people. DIATHESIS. A constitutional predisposition. EPHEBIC. Pertaining to the Greek system of instruction given to young men to fit them for citizenship; adolescent. EPIGONI. Successors; followers who only follow. EPISTEMOLOGY. The theory of knowledge; that branch of logic which undertakes to explain how knowledge is possible and to define its limitations, meaning, and worth. EUPEPTIC. Having good digestion. EUPHORIA. The sense of well-being; of fullness of life. EVIRATION. Emasculation; loss of manly characteristics. FERAL. Wild by nature; untamed; undomesticated. FORMICARY. An artificial ants' nest. GEMÜTH. Disposition; the entire affective soul and its habitual state. HEBETUDE. Dullness; stupidity. HEDONISTIC. Relating to hedonism, that form of Greek philosophy which taught that pleasure is the chief end of existence. HETAERA. A Greek courtesan. This class was often highly trained in music and social art, and represented the highest grade of culture among Greek women. HETEROGENY. (1) The spontaneous generation of animals and vegetables, low in the scale of organization, from inorganic elements. (2) That kind of generation in which the parent, whether plant or animal, produces offspring differing in structure or habit from itself, but in which after one or more generations the original form reappears. HETERONOMOUS. Having a different name. HOROLOGY. The science of measuring time and of constructing instruments for that purpose.