54 Gen . Sub. 
I. GENERAL SUBJECTS. 
combinations of ids in amphimixis ; these are inherited and lead to 
individual variations, or through isolation to new species. Tertiary 
variations, the result of environment, are not usually inherited ; Emery 
(147). 
Problem of variation : “ In the present state of knowledge it is a moro 
irresistible conclusion that the changos produced in the soma ultimately 
affect the germ-cells, than that variations in the latter are due to varia- 
tions of nutrition in some manner which no one has attempted to describe ” ; 
Cunningham (117). 
General discussion of variation, reversion, &c. ; King (281). — Varia- 
bility ; Mann (335). — Anomalies in man and mammals ; Blanc (40). 
Material for study of variation, finger-prints. Apparent definiteness 
or determinateness of variation ; Galton (177). 
Study of variation in colours of birds ; Keeler (277). 
An attempt to distinguish between “ congenital characters ” of cater- 
pillars and “ later adaptational characters ” ; Packard (383-386). 
Teratological variations ; Windle (553). 
Laws of variation, in relation to harvest spider ; Weed (534). 
Variability and hybridism in Cyprinoids ; Heincke (226). 
c. Influence of Function and Environment. 
General discussion ; Calderwood (85). 
Crustaceans adapted to colour of surroundings ; Malard (333). 
Influence of environment on development ; Sciiimkewitscii (458). 
“ Mechanical genesis of the scales of fishes”; Ryder (443). 
Influence of environment on colour of birds ; Keeler (277). 
Experiments on influence of light on coloration of flat-fishes ; Cun- 
ningham (116). 
Influence of running water and light on development of Anura ; 
Camerano (86, 87). 
Action of oxygen and compressed air on warm-blooded animals ; 
Philippon (396). 
Relation of strength of stream to form of fishes ; Schirsciioff (459). 
Influence of nutrition in producing polymorphism of Termites ; 
Grassi & Sandias(188). 
Effect of nutrition on fertility of worker wasps ; Marciial (336). 
[See Sex and Reproduction.] 
Effects of diminished nutrition on Lepidoptera, on individual, pupa- 
tion, number of offspring, &c.; Seitz (469). 
Effect of food (modified plant pigments) on colour of Lepidopterous 
larvae ; Poulton (404). 
Effect of warmth (of mills, &c.) on the multiplication of Ephestia 
kuehniella ; Danysz (120). 
Effects of temperature in pupal stage : Some, but not all of the charac- 
teristic colouring (in Pieris napl), depends not on whether the insect 
enters the pupal stage in spring or summer, but on the temperature to 
