The annals and magazine of natural history : zoology, botany, and geology . ate to these statesof equilibrium are not realized, because they do not correspond toconditions of sufficient stability. To make use of a trivial com-parison, otie cannot show the half or any fraction whatever of one stepof the ladder. In similar cases the progress is very discon-tinuous or, what comes to the same thing, only manifests itself in adiscontinuous manner. But we cannot derive from these facts anyargument against the formation of species by natural selection, stillless can we find there the sole and complet
The annals and magazine of natural history : zoology, botany, and geology . ate to these statesof equilibrium are not realized, because they do not correspond toconditions of sufficient stability. To make use of a trivial com-parison, otie cannot show the half or any fraction whatever of one stepof the ladder. In similar cases the progress is very discon-tinuous or, what comes to the same thing, only manifests itself in adiscontinuous manner. But we cannot derive from these facts anyargument against the formation of species by natural selection, stillless can we find there the sole and complete solution of the com-plex problems of metamorphism.—Actes de la Societe Scientifiquede Chili, t. V. 1895,; l^e livraisou, pp. 19-21. (Communicated bythe Author.) March 8,1895. * De Selys Longchamps, Revision des Psocides decrites par Rambur,Ann. Soc. Entomol. de Belgique, t. xvi. p. 6 (1873). t Catalogue raisonne des Orthopteres et des Nevropteres de Bel-gique, Ann. Soc. Entomol. de Belgique, t. xxxii. p. 128 (1888). M^lA G. petlo pHUlL-. s,t \ jtmoc.
Size: 1999px × 1250px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookidser6annalsmaga, booksubjectnaturalhistory
