TEXT-BOOKS, GENERAL WORKS, ESSAYS. Gen. Sub. 47 
Dimorphism, origin of in Metridium ( Ccelent .), Hahn (282). 
Paleontology and biology, variation, phylogeny, geography, Osborn 
(520). > 
Bearing of “ teeth ” on evolution doctrine, Adloff (3). 
Extermination, Distant (180). 
Exterminations, geological, Warring (738). 
Origin of fresh-water animals, experiments, Pelseneer (537). 
Homo primigenius and fossil H. sapiens , Gorjanovic-Kramberger 
(266). 
Poecilogony, Giard (249, 250). 
Evolution and disease, Nusbaum (514). 
d. Variation : — 
Work on variation, Vernon (717). 
Origin of variation, Cockerell (133). 
Race, modern theories, Hertz (320). 
Momentum in variation, Loomis (434). 
Geographical variation, examples, importance of, K. Jordan (356). 
Variation and correlation, Arcella , Pearl & Dunbar (534); variation 
and correlation, earthworm, Pearl & Fuller (536). 
Correlation of variation, serially homologous organs, Cambarus, Claw- 
son (132). 
Orthogcnetic variation, Coker (138, 139), Gadow (237).* 
Variation in ova, Heape (298). 
Variation, Rhegmatodes, Hargitt (290). 
Dimorphism, high and low males of Arthropoda, Smith (669). 
Variation in the coloration of Polistes (social wasp), Enteman (209).’ 
Variation in Paramecium experiments and statistics, Pearl & Dunbar 
(535). 
Progressive reduction of variability, Rosa (592). 
Biometrical work, V. (709). 
e. Adaptation, Convergence, Environment: — 
Direct adaptation, Detto (174). 
Adaptation, eyes of deep-sea animals, Caullery (114). 
Adaptation to marine life, Vertebrates, Fraas (233), Van de Wiele 
(754). 
Divergence and convergence, fishes, Eigenmann (204). 
Immunity and adaptation, L. Loeb (426). 
Adaptation, bone of ear, dog, Ribbert (581). 
Length of alimentary canal and nature of food, Rana , Yung (770). 
f. Selection and Protection: — 
Natural selection and consciousness, Wright (768). 
Probability of preservation of favourable variations, Kranichfeld 
(385). • 
Correlative basis for selection, Crampton (147). 
Selection, torsion of Crustacean Limb, Herrick (313). 
g. Ethology (incl. Phrenology): — (See also 4 d.) 
Importance of Ethology, Emery (206). 
Ethology and mutation, Wheeler (750). 
Mutualism in nature, Boulger (78). 
Animal societies, Mingazzini (478). 
Genesis of social life, von Wagner (730). 
Autotomy, Bordage (72), Reisowa (574). 
Cave-fauna, Crimea, Lebedinsky (397). 
1905. [VOL. XLII.] B 8 
