54 Gen. Sub. 
I. GENERAL SUBJECTS. 
Bumpus (95). — Polydactylism and partial fusion of median digits in pig ; 
Werner (764). — Polydactylism ; Cremazy (136). — Variations in brachial 
and lumbro-sacral plexi of Necturus; Waite (746). — Variations in shape 
and markings of sparrows’ eggs in America; Bumpus (96). — Unilateral 
homceotic variation in vertebral column of Anguis fragilis ; Cligny (120). — 
Variations in vertebral column, etc. ; Cornevin & Lesbre (132). — Corre- 
lated variations in fins of Acerina cernua ; Duncker (170). — Two-headed 
tadpole of common frog ; Loyez (455). — In colouration of birds and 
mammals; van Kempen (387). — Structural abnormalities in birds and 
mammals ; van Kempen (387). — A double gastrula in lizard ; Kopsch 
(4Q9). — Variations in species of Etheostoma ; Moenkhaus (513). — Variations 
[Modifications?] in intercranial markings; Regnault (599). — Structural 
variations in the vertebral apophyses ; Regnault (597). — Abnormalities in 
Echinoderm ova after fertilisation ; Schenck (647). — Variations and modifi- 
cations in Crustaceans, seasonal, local, and individual ; Stingelin (684). — 
Variations in spinal nerves of Hyla aurea ; Sweet (698). 
Measurements of crabs; Thompson (708). — Single, collective, and in- 
complete variations in the shells of species of Nautilus ; Willey (772). — 
A hundred per cent, variability in the head-scales of Boidce\ Zacharias 
(781). 
Senile changes, considered partly in connection with variations ; Allen 
(5). — Determinate variation and organic selection; Baldwin (22). — 
Individual variation; Mehnert (490). — Relation of individual variations 
to specific differences; Brewster (87). — Definite variation ; Mehnert 
(490).— ‘Mutation’ — illustrated by Necturus maculatus, Raf. ; Bumpus 
(95). — Definite variations; Cockerell (127). — Phenomena of convergence 
between Reptiles and Mammals; Deecke (157). — Discussion of the pro- 
blem of the eyes of blind fishes; Eigenmann (177). — Mechanism of 
variation ; Gautier (265). — Relative variation and correlation in civilised 
and uncivilised races ; Lee & Pearson (435). 
Eimer’s theory of orthogenesis ; von Linden (443). • 
Internal secretions considered in relation to variation and development ; 
Mathews (481). 
Coincident variations ; coincide with or are similar in direction to modi- 
fications; Lloyd Morgan (520), Baldwin (19). 
Scientific measure of variability ; Pearson (554). 
Functional adaptations; Welch (760), Regnault (698). — Theory of 
organic variation; Williams (773). 
Correlation in variation; Galton (254), Pearson (555), Pearson & 
Filon (556), Lee & Pearson (435). 
c. Modification : Environment and Function. 
Effect of chemical and physical agents upon protoplasm; Davenport 
(149). — Influence of poisons on cortical nerve-cells; Berkeley (47). — 
Modifications of vegetable mites by their environment; Berlese (48). — 
Influence of light on development of Amphibia; Chiarugi & Livini 
(113). — Influence of lecithins on growth; Danilewsky (148). — Determi- 
nation of movements of animals (direction and rate) by light; Davenport 
& Cannon (152). — Merrifield’s experiments on temperature in relation to 
variation; Dixey (161). — Eyes of blind fishes; Eigenmann (177). — Expe- 
riments on ova and larvae of fishes ; Fabre-Domergue & Bietrix (203). — 
Influence of various reagents on developing embryo of chick ; F^r^ (208- 
213). — Lighter pigmentation of salamander larvae induced by raised 
temperature as well as by increased illumination; Flemming (228). — 
Reactions of ciliate Infusoria to chemical, osmotic, and mechanical stimuli ; 
Jennings (375). — Influence of chemical and luminous stimuli on the skin 
