52 Gen. Sub . i. general subjects. 
adjacent parts ; Swaen (658). — Development and history of red blood- 
corpuscles ; Pappeniieim (517). — Development of auditory vesicle in 
Vertebrates ; Poli (543). — Conditions of the formation of bone and car- 
tilage ; Roller (372), Hanau (306). — Development of “spiral valve” in 
Selachii, a good instance of the analysis of immediate growth conditions 
in development; Ruckert (590). — Development of urinogenital system; 
Rabl (549). 
c. Experimental . 
On the occurrence of fortuitous individual differences in ontogenetic 
experiments ; Driescii (169). — Influence of yolk on development ; 
Samassa (598). — Influence of size of blastomere on the mode of 
cleavage, &c. ; Roux (583). — Developmental power of the first two 
blastomeres in the ovum of the crested newt ; Herlitzka (325). — 
Experimental study of the blastoderm margin in Salmo/tida: ; KoPSCil 
(374). — The number of cells in larvae from isolated blastomeres of 
Amphioxus ; T. H. Morgan (484). — Relation between first cleavage- 
groove and the embryonic axis in Amphibians and Teleosteans. In the 
former the first plane of cleavage corresponds to the median plane of 
bilateral symmetry of the future embryo ; in the latter it is at right 
angles to the same ; Bataillon (47). — Segmentation of the nucleus 
without segmentation of the protoplasm ; Norman (500). 
Experiments on eggs of sea-urchin and fishes ; Norman (500). — 
Experiments with Mollusc eggs, isolation of blastomeres ; Fujita (239). 
Experiments on Gasteropod development ; Crampton (135). — On eggs of 
Ctenophora ; Driesch (168). — Tactic irritability of mesenchyme cells of 
sea-urchin ; Driescii (170). — Experimental study of development of 
Ascaris megalocephala ; Zur Strassen (741). 
Influences of chemical changes of the medium on ova of Hana fusca 
and Bufo vulgaris ; Gurwitsch (289). — Influence of diluted sea-water 
on the development of the eggs of sea-urchins ; Rawitz (558). — 
Influence of temperature on development of frog’s eggs ; Hertwig, O. 
(329). — Interruption of incubation as a factor in malformations ; 
Kaestner (354). — Injection of peptone into white of egg ; influence on 
development ; Ferij: (217). — Influence of musk and vapours of essences 
on development of hen’s egg ; F^uls (215). — Influence of salt-injection 
on developing eggs of hen; FiSriS (220). — Effect of poison introduced 
into developing egg of the fowl ; Fere (214). — The effects of electricity 
and magnetism on development of eggs of fowls, silkmoths, trout ; 
Windle (723). — Action of electricity on development of ova of Amphi- 
bians ; Rossi (579). 
Experimental toratogeny ; double monsters from trout ova ; Supino 
(657). — Coalosconco of tadpoles ; Born (76). 
8. Reproduction, Sex, and Heredity. 
a. Reproduction and Sex. 
Reproduction, physiology of ; Lee, see Howell (339). — Ovulation 
and menstruation : occurrence of a sympathetic ganglion in the human 
ovary ; Winterhalter (725). — Nuclear fusion in the conjugation of 
Actinoplirys sol — first observed case in Rhizopods ; Sciiaudinn (606). — 
Sexual phases of Myzostoma ; Wheeler (712). — Ovarian ova of Mammals,, 
guinea-pig, rabbit, &c., may show (1) division to form regular polar 
bodies or similar elements ; (2) division into numerous nucleated seg- 
ments, equal or unequal ; (3) fragmentation ; (4) loss of membrana pel- 
lucida as division goes on ; Janosik (411). 
