58 NATURAL SCIENCE. Jan.. 



Diplanetism (apparently an erroneous form oi diplanesis, from St's,. 

 twice, and tt ka'vrjcns, a dispersing), double swarming of zoospores 

 (Humphrey.) 



Distad, directed from the Centrum. (Schulze.) 



Distan, on the periphery of a Synstigma. (Schulze.) 



Dorsan, on the outer surface of the dorsum. (Schulze.) 



Ectergogeuesis (c'kto's, without ; epyov, work; ye'veo-t?, birth), the 

 passive reactions of an organism to environment. (Hyatt.) 



Ectergogenic (erroneously for " ectergogenetic "), adjectival form 

 of the above. (Hyatt.) 



Entergogenesis (JvTo's, within; epyov, work; yevea-cs, birth), the 

 active reactions of an organism to environment. Equals " effort " of 

 the Neo-Lamarckians. (Hyatt.) 



Entevgogenic (erroneously for "entergogenetic"), adjectival form of 

 the above. (Hyatt.) 



Enter go genisni (an impossible word), the principle of the above. 

 (Hyatt.) 



Ergogeny (erroneously for "ergogenesis") (epyov, work; yeVeo-ts, 

 origin), general term for all forms of energy producing modifications 

 of bone. (Ryder.) 



Ergo genetically adverbial form of the above. (Ryder). 



Genesiology (ye'i'eo-i^, birth; Xo'yos, science), the study of the 

 phenomena of heredity. (Hyatt.) This term has already been used 

 in another sense, viz., "the science of generation," and should there- 

 fore be inadmissible. 



Genetic force, the active force of heredity. (Hyatt.) 



Genism (an impossible word), the principle of heredity. (Hyatt.) 



Hemera (ifixepa, day), a chronological subdivision of the geological 

 term "age," marking the acme of development of one or more 

 species. (Buckman.) 



Heteropol, see Bilater alien. 



Heterotrophic (e"re/>os, other ; tpo<^lko^, nourishing), existing with 

 aid of commensals ; applied to lichens. (Minks.) 



Isopol, see Bilateralien . 



Karyokinetic (Ka'pvov, a kernel; k ti'r;rtKo's, setting in motion), 

 applied to phenomena of active stages of cell-nuclei, an old term 

 restricted. (Ryder.) 



Karyostatic (Ka'pvov, a kernel; ararLKO'i, causing to stand still), 

 applied to phenomena of resting stages of cell-nuclei. (Ryder.) 



Kinetogeny (erroneously for "kinematogenesis," or "kinesigenesis," 

 KLvecv, to move; yeVeo-ts, origin), energy of motion, the agency pro- 

 ducing modifications in the form and proportions of bones. (Ryder.) 



Meta-type (fxera, after; ruVos^, type), apphed in zoology to a 

 specimen collected at the exact locality whence was obtained the type 

 of the species to which it belongs, and named by the author of that 

 species. (Thomas.) 



