DEVELOPMENT

n. De-ve2l'op-me2nt. Lat., evolutio. Fr., developpe ment. Ger., Entwickelung, Ent wick lung. It,, svilupo. Sp., desarrollo. 1. A proce of formation, especially of an embryo. 2. In photography, the proce by which an image on a plate is made visible. [L.1 3. In biology, increase or differentiation of structure. [L, 357.] Axial d. [Herbert Spencer]. D. which proceeds from one or more axes. [L, 357.] Central d. [Herbert Spencer]. D. which proceeds from one or more centres. [L, 357.] Continuous d. [Huxley]. D. in which " the whole product of a germ coheres in one ma " e. g., a vertebrate. [L, 357.] Discontinuous d. [Huxley]. D. in which the whole germ product does not cohere in one ma e. g., an animal which gives off buds, etc., as a polype, which become independent animals; or a plant, as the strawberry, which reproduces by suckers. [L, 357.] Multi-axial d. D. which proceeds from more than one axis. [L. 357.] Multicentral d. [Herbert Spencer]. D. which proceeds from more than one centre. [L, 357.] Recurrent d., Retrograde d. That form of d. in which the adult individual is le highly developed than the embryo. [L, 147.] Of. DEGRADATION. Uniaxial d. [Herbert Spencer]. D. which takes place around a single axis. [L, 357.] Unicentral d. [Herbert Spencer]. D. which proceeds from a single centre. [L, 357.] [s. 542]