DURATION OF LIFE IN ENCAPSULED TRICHINLE. 103 
giving the same internally, and, when possible, removing the false mem¬ 
brane, and penciling the base with two per cent, carbolic acid. The 
contagious nature of the affection was proved by the fact of the healthy 
calf taking the disease when placed with the others. Experiments fur¬ 
ther demonstrated that, by placing bits of diphtheritic membrane either 
in the nose or beneath the skin, the disease could be produced in lambs 
and rabbits—results similar to those obtained with the false membrane 
from man. An exceedingly interesting fact is the probable transmissa- 
bility of the diphtheria of calves to man. The Inspector above refer¬ 
red to, who had charge of the diseased animals, sickened with an affec¬ 
tion similar in all respects to ordinary diphtheria ; the servant also suf¬ 
fered from sore throat, swelling of the neck, etc., but not so severely. 
These were the only individuals who were brought in contact with the 
calves. 
A beautiful colored plate accompanies the paper, showing the yel¬ 
lowish membrane upon the tongue, palate and cheeks. (Condensed 
from Deutsch Geitschrift f. Thiermedicin , Bd. Ill, lifts. 1 and 2.) 
ON THE DURATION OF LIFE IN ENCAPbULED TRICHINLE. 
By Prof. Dammann, of Eldena. 
Many observations have been published on this subject in the last 
16 years. Thus Groth described a case in Altona in which it was prob¬ 
able that the migration of the parasites had taken place 7 or 8 years 
previously, and it was proved experimentally that the worms still lived. 
In a case of Tungels, Virchow thought that the infection had taken 
place 13 years before, and yet the parasites were capable of develop¬ 
ment. Still later Klopsch published the case of a woman .in whom he 
believed the trichnise had remained alive in the muscles for 24 years. 
In all these cases no positive proof of the age of the trichniae could be 
obtained ; for, being found accidentally post-mortem or during an opera¬ 
tion, it was only on the ground that the individuals had had a peculiar 
disease 8, 13 or 24 years previously, that the migration was supposed to 
have taken place at that time. 
The author relates an instance of long encapsuled life of trichinise 
in a pig, the time of their migration being accurately known. The ani r 
mal was fed with flesh containing trichiniae in November, 1864, and in 
February, 1865, when seven months old, sent to one of the experimental 
stalls of the Institute of Animal Physiology in Eldena, in which it has 
