52 Gen. Suh. 
I. GENERAL SUBJECTS. 
Transmission of acquired characters : Modified activity of certain 
organs ( e.g ., in Brown-S6quard’s experiments on epilepsy) may perhaps 
result in the formation of certain products, probably ferments, which are 
taken up along with the germ-plasm and handed on. This accessory part 
of the germ-cell is called Zymoplasm ; Emery (147). — Coloration of Flat- 
fishes : “ The disappearance of the pigment from the lower side in the 
normal flat-fish is an hereditary character, not due to the withdrawal of 
the action of light in the individual On the other hand, the fact 
that the pigment, after prolonged action of the light, actually reappears, 
is strong evidence that originally, in the beginning of the evolution, the 
pigment disappeared, in consequence of the withdrawal of the lower sides 
from the action of light. If so, an acquired character has become here- 
ditary ; Cunningham (116). 
Cases supposed to illustrate transmission of acquired characters : A cow 
twisted its horn, a female calf showed same deformation. A peculiar way 
of holding the tail was traced from a mare through two generations. A 
pair of bulldogs were taught to carry ; one of the offspring, sent away 
when quite young, exhibited carrying habit without any training ; 
Knauthe (285, 286). 
Inheritance of Mopskopfigkeit in Cyprinoids ; Knauthe (284). 
Gold-carp : Evidence showing that the double-tailed races have arisen, 
in the first place, as a consequence of injuries inflicted during the early 
development of the eggs and embryos, and that the effects of these 
embryonic traumatisms have become transmissible ; Ryder (441). 
Persistent loss of spore-forming function in Bacillus anthracis, as result 
of heat ; Phisalix (397). 
Hereditary transmission of immunity; Ciiarrin & Gley (98). — 
Facts suggesting the transmission of immunity ; Ciiarrin & Gley (187). 
Heredity of tuberculosis ; Gartner (175). 
Malformation from pre-natal influence ; Wallace (525). 
Adverse criticism of apparent cases of inherited results of mutila- 
tion ; vom Rath (412). 
Supposed inheritance of acquired characters in domesticated animals. 
All experience against transmission of results of mutilation. Climatic 
variations in cattle are transmitted. Improbability that germ-plasm can 
remain uninfluenced by nutrition and metabolism of the body. But the 
author’s argument lacks sufficiently precise appreciation of Weismannism; 
Wilckens (548). 
Removal of the maternal nucleus from an ovum removes the maternal 
heredity tendencies ; Boveri (55). 
Non-inheritance of acquired characters ; Wallace (524). 
Acquired character, phylogeny of ; Hyatt (269). 
Congenital and adaptational characters ; Packard (383). 
Therapeutic effects of testicular extract, &c. ; Brown-Si<!QUard 
& d’Arsonval (71-74). 
Report on teratology ; Windle (552). 
Double monstrosity : believed to be due to superfluity of germ-plasm 
