OVUM AND SPERMATOZOON. 
Gen. Sub. 57 
Spermatogenesis, Apis, Petrunkewitsch and Meves, Giglio-Tos (258). 
Spermatogenesis, Periplaneta , Moore & Robinson (488). 
Chromosomes and accessory chromosome, “ synizesis,” Orthoptera , 
McClung (463). 
Spermatogenesis, Dytiscidce, osmotic pressure, Tunner (706). 
Spermatogenesis, Myriopoda, Blackman (53, 54). 
Spermatogenesis, Arachnida , Boesenberg (60) ; of Araneida , Wallace 
(733). 
Spermatogenesis of Myriapod Lithobius, Verhoeff (715). — Scutigera , 
Medes (468) ; Ergastoplasraa, pseudochromosomes, mitochondria, Scolo- 
pendra , Bouin (75). 
Spermatozoa, Decapod Crustacea , Koltzoff (379). 
Spermatogenesis, Helix, Tschassownikow (704). 
Spermatogenesis, Lumbricus, Bugnion & Popoff (92, 93) ; Depdolla 
(172). 
Spermatogenesis, Ascaris, Tretjakoff (703). — History of spermatozoon 
of Ascaris megalocephala, Scheben (616). 
Spermatogenesis, Hydra, Downing (185a). 
Spermatozoa of Evertebrates, Retzius (578). 
Spermatozoon, Petromyzon, Ballowitz (20) ; Pelodytes, Ballowitz 
( 21 ). 
Nuclei of Sertoli, function, amitosis, BergoniIs & Tribondeau (46). 
Interstitial gland, testis of horse, changes during life, Bouin & Ancel 
(76). 
d. Maturation : — 
Maturation, summary of views, Gr^goire (269). 
Maturation, unusual, absence of chromosomes etc., Alcyonium, Hill 
(324). 
Maturation, Nudibranchs, rearrangement of molecules in chromosomes, 
Smallwood (668). 
Maturation, polar bodies, parthenogenesis of Tenthredinidce , Doncaster 
(182). 
First polar spindle, Bufo , King (372). 
Maturation, Allobophora, Foot & Strobell (226). 
First maturation spindle, Allobophora, Foot & Strobell (225). 
Maturation and second polar body, Cyclops , Sidorow (659). 
e. Fertilisation : — 
See Schaudinn, 8 reproduction, p. 59. 
Fertilisation, critical on recent work, O. Hertwig (315). 
Chemistry of fertilisation, Fischer & Ostwald (223). 
Permeability of egg-membrane to sperm, Echinoderms, Newman (509). 
Dispermy, Echinoderma , Boveri (81). 
Cross and self-fertilisation, Ciona, Morgan (500). 
7. Embryology, Development. 
a. General : — 
Review, annual, of embryology, classification of parthenogenesis, Loisel 
(428). 
Nature of development, vitalism and mechanism, Wilson (757, 758). 
Variation in development, Peter (542, 543). 
Temperature and development, Peter (541). 
Development mechanics, a work on, Roux (596). 
Energy of ontogeny, Tangl (693). 
