EMBRYOLOGY, REPRODUCTION, ETC. 
Gen. Sub. 61 
Effects of freezing eggs for a short time; Rabaud (633).—Developmental 
mechanics studied in the segmentation of the Ctenophore ovum ; 
Rhumbler (655).—Influence of temperature on eggs of the fowl; Salvioli 
(681).—Peculiar results of placing developing ova of Loligo in various 
solutions of salts of magnesium, lithium, etc.; Schimkewitsch (693).— 
Influence of scarcity of air on the early development of the egg ; Schultze 
(701).—Influence of low temperature on development of frog; Schultze 
(705).—Experiments as to influence of staleness of sex-cells on development 
in Ecliinoids; Vernon (790). 
8. Reproduction (incl. Regeneration), Sex, and Heredity. 
a. Reproduction and Sex. 
Introduction to the study of sex and reproduction ; Le Daxtec (432).— 
A theory of reproduction ; Giglio-Tos (279).—Some phenomena connected 
with reproduction and sex; Sedgwick (712).—Sexual function and meta¬ 
bolism; Loewy (472), Loewy & Richter (473).—Correlations between 
reproductive organs and antlers, a detailed study of much importance; 
Rorig (664, 665).—Effects of ovarian castration ; Pinzani (615). 
Modes of Reproduction:—Parthenogenesis in Lepidoptera; Nussbaum 
( 580).—Parthenogenetic development of drones, discussion; Paulcke 
( 596).—Parthenogenesis in feather commensals; Trouessart (774).— 
Changes in unfertilised ova of trout; His (352).—Is there ever partheno¬ 
genesis of the microgamete in Metazoa?; Giard (275, 276).—Artificial 
parthenogenesis of sea-urchin ova,—by subjecting the eggs for two hours 
to a solution, of magnesium chloride in the sea-water; Loeb (466).— 
Parthenogenesis and thelytoky in Phasmidse; Dominique (179).—Her¬ 
maphrodite and gynandromorph Hymenoptera; Dalla Torre & Friese 
( 151).—True hermaphroditism in man and in the higher animals; Gueri- 
colas (295).—Non-sexual reproduction in Dero vaga\ Galloway (260).— 
Grafting experiments on Hydromedusae; Hargitt (307 •& 308).—Copula- 
tory phenomena in Hirudinea; Brumpt (90).—In Hmmenteria (Clepsine) 
costata there is marked protandry, and exchange of spermatophores occurs 
in a copulatory process in which the male organs alone are concerned, 
the female organs being at the time quite rudimentary; Kowalevsky 
( 413).—Hiqiodermic impregnation in leeches; Kowalevsky (414).—Periods 
of sexual maturity in the animals of the Bay of Naples; Lo Bianco 
( 459).—Epitokous forms of Polychaets; Caullery & Mesnil (113).— 
Epitokous and other reproductive peculiarities in Annelids; Mesnil & 
Caullery (530); McIntosh (489). 
Determination of sex :—Historical notes on the determination of sex; 
Cevidali (116).—Critical summary on the determination of sex; Henxe- 
berg (326).—Determination of sex; Gadeau de Kerville (256), Gerot 
(274), Reepex (645), Weill (819).—In regard to the life-history of 
Dicyemidae it is suggested that “ as in so many other cases in the animal 
and vegetable kingdoms the males make their appearance when the condi¬ 
tions of life become unfavourable’ 1 ; Wheeler (825). 
Behaviour of nuclei in conjugation of Colpidium ; Hoyer (365).—Condi¬ 
tions of multiplication and conjugation in Ciliate Infusorians; Joukowsky 
( 381).—Conjugation in Infusorians; Prowazek (622).—Alternation of 
generations in Sporozoa; Schaudinn (689).—Reproduction in Amoebae; 
Scheel (691).—Total conjugation and partial- conjugation are connected 
by transitional forms, e.g. in Vorticellina; Wallengren (806). 
Hybridisation Experiments in Hybridisation; Ewart (213).—Sex of 
hybrids; Gadeau de Kerville (256).—Hybridisation, facts of; Masters 
( 506).—Hybridism in birds and mammals, some cases; van Kempen 
