EMBRY OLOGICAL, REPRODUCTION, ETC. Gen. Sub. 51 
of Amphibian ova ; Chiarugi & Livini (113). — Influence of various reagents 
on the developing embryo of the hen; Frills (209-213 & 217). — Incubation 
of fowl’s egg in vertical position; FfiiRE (208). — Resistance of embryo of 
chick to wounds; FlSit^i (206). — Development of isolated portions of 
Ctenophore eggs ; Fischel (226). — Segmentation of compressed ova ; 
Heider (331).— Necessary inorganic salts for normal development of 
echinoid larvce ; Herbst (338). — Development of complete embryos from 
isolated blastomeres of the eggs of the newt; IIerlitzka (342). — Me- 
chanical modifications induced in the fertilised frog ovum by centrifugal 
force ; Hertwig (349). 
Teratological Studies ; experimental observations on tho primitive streak 
in birds; Mitrophanow (510). — Experiments on frog’s eggs; Morgan, 
T. H. (522). — Directive action of gravity an essential condition of normal 
development of frog’s eggs. Experimental evidence of this ; Schultze 
(657). — Note on Schultze’s rotation-experiments with frog ova; Roux 
(629). — Experiments on amphibian embryos with Ringer and salt solutions ; 
Wilson (774). 
8. Reproduction (incl. Regeneration), Sex, and Heredity. 
a. Rejiroduction and Sex. 
Resemblances in reproductive processes of plants and animals ; IIaecker 
( 308). — Phenomena of reproduction ; Hartog (319). — Structure and func- 
tion of sex-organs; Plato (571). — Rhythm of reproduction in Mammals; 
Beard (41). 
Span of gestation and cause of birth ; Beard (40). 
Reproductive divergence, a factor in evolution; Jordan (378), Vernon 
(727). 
Divergent modes of reproduction : — Parthenogenesis in Orthoptera ; 
Bolivar (64). — Parthogcnctic segmentation ; Rossi (624). — Hermaphro- 
ditism. Ovum in testis of lamprey; Ward (750). — Budding and Asexual 
reproduction, jmrticularly in Chcvtogantcr ; von Book (62). 
Alternation of gonorations in Cynips calicis ; Belie rinck (43). 
Ncotcinia and other reproductive phenomena in Termites; Grassi & 
Sandias (292). 
Experimental : — Transplantation and growth of Mammalian ova within 
a uterine foster-mother; Heape (325). — Artificial insemination in mammals, 
successful experiments ; Heape (324). — Coition, insemination, and ovu- 
lation ; Heape (324). 
Determination of sex ; CuiSnot (142). —Determination of sex in Ilydatina 
senta ; Nussbaum (539). 
Hybridisation: — Hybrids; Ackermann (1). — Hybridism in domestic 
animals; Baillet (17 & 18). — Hybrids in birds; Van Kempen (387). — 
Hybrids in the wild state ; over a thousand pages on birds ; Suchetet 
(695).— Problems of hybridisation ; Suchetet (694). 
Breeding of animals ; Kohlwey (408). 
Studies in consanguinity ; Reul (606). 
Sex-characters: — Biology of sex; Lanov (426). — Causes of the appear- 
ance of secondary sex characters; Grochowski (297). — Phenomena of sex 
considered in relation to internal secretions; Keiffer (384). — Influence of 
sex glands on secondary sex characters ; two incomplete experiments ; 
Hanau (316). 
Male Rotifers ; degrees of degeneration ; Rousselet (625). 
Proportions of limbs and sexual characters; Fi3Ri£ (207). 
Secondary sex characters in man; Pfitzner (563), Prarson (553). — 
Relative variability of sexes; Pearson (553). — Beard in Viragines; 
Brandt (80). 
