_Malthusianism_: (Thomas Robert Malthus, English political economist, 1766–1834). The doctrine that population increases in geometrical progression; and the teaching, founded on this doctrine, that over-population should be prevented.—Stedman’s Medical Dictionary. _Doctrine of Malthus_: the doctrine that the increase of population is proportionately greater than the increase of subsistence.—Gould’s Practitioner’s Medical Dictionary. _Theory of Malthus_: that small families will abolish poverty and disease; recommends _continence_ and _late marriage_ to bring about this result. _Theory of Neo-Malthusians_: that small families will abolish poverty and disease; recommends _early marriage_ and use of _preventive checks_ to bring about this result. _Pregnancy_: gestation, fetation, gravidity.—Stedman’s Medical Dictionary. _Pregnancy_: results from the meeting and fusion of two living cells, the cell furnished by the male (_spermatozoon_) and that by the female (_ovum_). To avoid or to prevent conception or pregnancy, then, consists of stopping the male cell from uniting with the female cell. _Prevention of Conception_: to prevent the male _sperm_ from meeting the female _ova_. _Prevention of Conception_: the only logical and practical means for eliminating _abortions_ when a child cannot be carried to full term. _Preventive_: anything which arrests the threatened onset of disease.—Stedman’s Medical Dictionary. Modern Art Printing Co., New York. ------------------------------------------------------------------------ TRANSCRIBER’S NOTES