18 Gen, Sub. 
GENERAL SUBJECTS. 
Ziegler, H. E. Die biologische Bedeutung dor amitotischen (direkten) 
Kernteilung im Tierreich. Biol. Oeatralbl. xi, pp. 372-389 ; cf. t. c. 
pp. 744-757. 
Amitotic or direct division represents the end of a series of divisions, 
and is a symptom of more or less degeneration. 
. The Biological Import of Amitotic (Direct) Nuclear Division in 
the Animal Kingdom. Ann. N. H. vii, pp. 362-380. 
Zoja, L. & R. Sur les plastidules fuchsinophiles (Bioplastes d’Altmann) 
dans la serie animate. Arch. Ital. Biol, xvi, pp. 71-79. 
. Ueber die fuchsinophilen Plastidulen. Arch. Anat. Phys. Anat. 
Abth. 1891, pp. 335-351. 
. Intorno al plastiduli fuscinoGli (bioplasti deli’ Altmann). Mem. 
R. 1st. Lomb. xvi, pp. 237-270, 2 pis. ; J. Microgr. xv, pp. 233-238 
& 263-267. 
The bioplasts of Altmann, or the plastidules of Maggi, their wide 
occurrence and perhaps nutritive function in animal cells. 
d. OOGENESIS AND FERTILISATION. 
°Alexenko, N. Contribution a l’histologie normale et pathologique des 
ovaires de la femme. Ann. Gynecol, xxxv, pp. 417-427. 
Aijerbacii, L. [See “ Sex and Reproduction.”] 
“ The sexual contrast is based on the occurrence of two substances 
which are qualitatively different, the male being cyanophilous, the female 
erythrophilous.” 
Bernard, H., & Bratusciiecic, K. Der Nutzen der Schleimhullen fur 
die Froscheier. Biol. Centralbl. xi, pp. 601-604. 
Uses of jelly-sphere round frog ovum, in protecting from drought, 
pressure, birds, fishes, &c., in forming interspaces in which Algae live, but 
especially in forming an incubating chamber retaining heat. 
BOiim, A. A. Die Befruchtung des Forelleneies. SB. Ges. Miinchen, 
1891, pp. 63-73, 13 figs.; Munchen. med Wochenschr. xxxviii, pp. 
539-542. 
Brauer, A. Ueber die Eutwicklung von Hydra. Z. wiss. Zool. lii, pp. 
169-216, 4 pis. 
. Ueber die Enstehung der Geschlectsprodukte und die Entwick- 
lung von Tubularia mesembryanthemum , Alim. T. c. pp. 551— 
579, 3 pis. 
Cunningham, J. T. On some Disputed Points in Teleostean Embry- 
ology. Ann. N. H. vii, pp. 203-221. 
Origin of periplast nuclei, &c. 
