REPRODUCTION, SEX, ETC., EVOLUTION. 
Gen . Sab . 55> 
Betiie (65, 66). — Bird-song, influence of heredity aud imitation; 
Witchell (726). — Inheritance of an acquired character ; five fox-terrier 
pups out of a litter of: seveu, born with short tails ; Hills (336). 
Experiments on supposed inheritance of acquired characters. Testing 
of Brown-Sequard’s conclusion that droop of: eyelid in guinea-pig, pro- 
duced by section of cervical sympathetic nerve, is transmitted. Experi- 
ments of the author were quite negative, no appareut transmission. The 
apparent transmission may be due to individually acquired conjunctivitis,, 
which is common in guinea-pigs: Hill (335). — Breeding with sinistral 
snails ; out of 241 young (7 nests), all dextral; in another case 606 young 
from 9 sinistral snails, all dextral ; Lang (391). 
Telegony experiments ; Ewart (209). — Against telegony; Bell (57),. 
Wade (691). — Telegony in man ; Pearson & Lee (529). 
Maternal impressions ; Ballantyne (38). 
Experiments as to inheritance ; Celesia (111). 
Reversion and atavism ; Deiuerre (153). 
9. Evolution. 
a. General . 
Primary factors of organic evolution ; Cope (127), McKeen Cattell.. 
(109). — The material and the efficient causes of evolutiou ; Cattell 
(108). — Factors of organic evolution from a botanical standpoint : evolu- 
tion problems in connection with cultivated plants; also general discussion ; 
Bailey (25, 26). — Evolution and man’s place iu nature ; second edition, 
largely re-written ; Calderwood (99). — The relation of organic to 
mental evolution, chap. 12 ; Lloyd Morgan (481). — The method of 
Darwin ; Cramer (134). — Philosophical consideration of Darwinism ; 
Habeniciit (295). — Darwinism aud its place in the development of 
science ; Schellwien (607). — Present position of Darwinism ; Wolfe 
(728). — Mechanical aspects of evolution ; Janet (349). — Consideration of 
the time required for organic evolutiou ; Poulton (544). — Some generali- 
sations on evolution from the paleontologist’s standpoint ; Scott (623). 
— Factors of organic evolution from the embryological standpoint. “The 
facts which are at present at our disposal justify a return to the position 
of Darwin. Neither Weismannism nor Lamarckism alone can explain 
the causes of evolution. But Darwiuism can explain these causes” ; 
Conklin (125). — Experimental evolution ; Ris (571). — Chemical evolu- 
tion of species ; Le Dantec (403). — Preservation or persistence of 
specific characters ; Huppert (341). 
b. Variation. 
Variation ; Kennel (361). — Modification and variation ; Lloyd Mor- 
gan (481, 482). — Ontogenic and pliylogenic variation ; Osborn (516). 
— Anlage and variation ; Virchow (682). — Organic variation as a 
criterion of development ; Montgomery (477). — Relationships of Lepido- 
j) ter a : definite variation; Eimer (193). — Orthogenesis, or definitely 
directed evolution ; Eimer (192). — Variation after birth ; Bailey (27). 
— Numerical variation of typical organs ; Haacke (291). — Topoplasy and 
Alloplasy ; Haacke (292). — Spurious correlation which may arise when 
indices are used in the measurement of organs ; Pearson & Lee (530). 
— Species and breeds iu higher animals considered in relation to sexual 
polymorphism ; Baron & Dechambre (46).— Comparative variability 
of the sexes ; Davenport & Bullard (152). 
The individual variation of the Vertebrate embryo ; Meiinert (452). 
— Variation of embryos (of duck), in size and proportion, occur at all 
