84 
GEORGE H. BAILEY. 
turely born, two of which required assistance at birth, as the 
mother was much exhausted. One of the two was removed at 
about the eighth month of gestation. This foetus on examina¬ 
tion was found saturated with tubercles, some of which were as 
large as peas, and on drawing a knife across them they were 
found calcified. Tubercles were found in the liver, bowels, dia¬ 
phragm and chest-wall, there being none observed upon the 
lungs. The mother of the calf was killed some weeks afterward 
and was found highly tuberculous. 
No. 2 was from a diseased mother, also at about the eighth 
month of gestation. On examination, I found the liver, dia¬ 
phragm and bowels quite thickly studded, but the tubercles 
were much smaller than in the preceding case. 
During the spring of 1885, a number of young heifers, which 
had been kept upon another portion of the farm, were with calf 
by the bull killed in June previously. It was deemed advisable 
to kill them. The calves of these heifers were all diseased, the 
disease in one calf being U'aced directly to the bnll^ as the 
mother was found unquestionably healthy. 
Fleming says, “ The influence of contagion on the propagation 
of tuberculosis has been affirmatively solved, for we have fur¬ 
nished ample proof of its hereditary transmission ; this transmis¬ 
sion being nothing more than the infection of the ovum or foetus 
through the medium of the parents.” 
If we demonstrate then, in any instances that heredity is 
operative in the case of any foetus m-utero being found diseased, 
sueh clinical fact proves that infection must have been conveyed 
either by the ovum or the embryo (congenital, or uncongenital 
transmission.) 
Dr. Theobald Smith says ‘‘ the tubercle bacillus may pass in 
the semen of the male and infect the ovum directly. 
2d. The ovum may be infeeted by disease of surrounding 
structures (peritoneum, ovaries. Fallopian tubes) in the female. 
3d. The foetus may be infected by the passage of tubercle 
bacilli from the maternal placenta into the foetal circulation. 
The infection through the placenta is probably the most frequent 
