CELL AND PROTOPLASM. Gen, Sul). 15 
[Hermann, F.] Ueber dio Entstchung der karyokinetischcn SpindelGgur. 
Biol. Centralbl. xi, pp. G70-G72. 
*Hertw1o, 0. Ueber pathologische Yeranderung des Kernteilungs 
prozesses infolge experimenteller Eingriffe. Internat. Beitr. wiss. 
Med. i, pp. 195-212. 
Kossel, A. Ueber die chemisclie Zusammensetzung der Zelle. Yerh. 
Phys. Ges. Berlin in Arch. Anat.Phys. (Phys. Abth.) 1891, pj5. 181-186. 
. [See also Behrens, W.] 
Lowrr, M. Ueber amitotische Kernteilung. Biol. Centralbl. xi, 
pp. 513-516. 
Amitotic division may be both regenerating and degenerative. 
°Lukjanow, S. M. Grundziige einer allgemeinen Pathologie der Zelle. 
Leipzig : 8vo, viii & 325 pp. 
Macallum, A. B. Morphology and Physiology of the Cell. Tr. Can. 
Inst, i, pp. 247-278. 
McKendkick, J. G. President’s Address : On some of the Problems of 
Modern Physiology. P. Phil. Soc. Glasg. xxii, pp. 1-21. 
Some discussion of the structure and metabolism of protoplasm. 
°Matzdorff, C. Zur Zellenlehre. Naturw. Wochenschr. vi, pp. 85-87 
& 12G-129. 
MeveS, F. Ueber amitotische Kernteilung in der Spermatogonien des 
Salamanders und Yerhalten der Attraktiouspharen bei derselben. 
Anat. Anz. vi, pp. 629-639, 11 figs. 
In the spermatogonia of Salamandra amitotic division often occurs, 
especially in March and in September and October ; mitosis also occurs, 
rarely in spring, more frequently in autumn, and predominantly from 
May till August. This periodicity suggests that the amitotic division is 
not necessary to the normal regeneration of the testes. An annular 
attractive sphere was observed. 
Morris, J. C. An hypothesis as to the Nature and Origin of Germ 
Force. P. Ac. Philad. 1891, pp. 73 & 74. 
MOlleii, II. F. Ein Beitrag zur Lehro vom Verhalten der Kern- zur 
Zellsubstauz wahrend der Mitose. SB. Ak. Wien, c, pp. 179-188, 
1 pi. 
In elements of blood in spleen of Triton the nuclear membrane dis- 
appears in mitosis, and the cell-substance mingles with the nuclear 
substance. 
°Ntjel, J. P. Contribution a l’etude de la structure fibrillaire des proto- 
plasmes cellulaires. Yerh. x Internat. Med. Kongr. Berlin (1890) 
ii, pp. 1-4. 
c ‘Paladino, G. Gl’ infiuitamente piccoli o i trionfi della dottrina cellu- 
lare. Discorso inaugurate. Estr. d. Annuario scolastico, 1890-91. 
4to, 25 pp. 
