18 Gen. Sub. 
GENERAL SUBJECTS. 
Sedgwick, A. Development of Cape Species of Peripatus. Q. J. Micr. 
Sci. xxvi, pp. 175-207, 3 pis. 
If protoplasm of body primitively a syncytium, and the ovum until 
maturity part of this, separation of generative products does not differ 
essentially from internal gemmation of a Protozoon, and inheritance of 
parental peculiarities is rendered less mysterious, as change in molecular 
constitution of any part would naturally spread through the whole 
mass. 
Sutton, J. B. On Atavism. P. Z. S. 1886, pp. 551-558. 
“ The facts at our disposal seem to point to the conclusion that the 
epiblast is chiefly derived from the male element, while the female pro- 
nucleus is responsible chiefly for the hypo- and greater portion of tho 
mesoblast.” 
. General Pathology. London : Churchill, 8vo, 380 pp., 149 figs. 
Discussion of hereditary transmission of pathological characters. 
Virchow, R. Descendenz und Pathologie. Virchow’s Archiv. ciii, 
pp. 1-15, 205-215, & 413-437. 
Critique of Weismann’s theory of the non-inheritance of characters 
externally impressed during the individual life of parent. The difference 
between pathological and atavistic variation, e.g ., between pithecoid 
atavism and pathological “ pithecism.” Atavism defined as discontinuous 
heredity. Three kinds of theromorphy : — self-acquired, inherited from 
an individual in which it was acquired, and strictly atavistic. The latter 
is always inherited. Discussion of teratology in its relation to variation 
and heredity. 
Warynski, S. Sur la production artificielle des Monstres a coeur double 
chez les Poulets. Quelques reflexions sur la loi qui r6gle la con- 
stance des formes chez l’Embryon, sa verification exp5rimentale. 
Rec. Z. Suisse, iii, pp. 261-311 ; 61 pp., pi., Geneve. 
Weismann, A. [See Reprod.] 
Individual peculiarities impressed by environmental influences on the 
Metazoan parent are not known to be hereditarily transmitted. 
. Zur Geschichte der Vererbungstheorien. Zool. Anz. ix, pp. 
344-350. 
* . Zur Annahme eiuer Continuitat der Keimplasmas. Ber. Freiburg 
Ges. Bd. i, Heft 4. 
Wolff, M. Ueber erbliche Uebertragung parasitarer Organismen. 
Virchow’s Archiv. cv, pp. 192-196. 
Direct inheritance of micro-organisms, very rare at least. 
°Ziegler, E. Konnen erworbene pathologische Eigeuschaften vererbt 
werden, und wie enstehen erbliche Krankheiteu und Missbilduugen ? 
Jena : Fischer. 
