610 
ANNALES DE L’INSTITUT PASTEUR 
Endof llth week 
GROUP I 
CONTROL UXHEATED 
GROUP II 
MILK HEATED TO 78° 
Animal killed. 
No local lésion. 
Slight enlarge- 
ment of popliteal. 
Slight tubercu- 
lous lésions of 
inguinal sublum- 
bar lymphatics and 
spleen. 
Tubercle bacilli 
found in ail these 
lésions. 
GROUP III 
MILK HEATED TO 92° 
Animal killed. 
Slight local lé¬ 
sion,^no ulcération. 
Inguinalandsub- 
lumbar glands very 
slightly enlarged, 
a few tubercle ba¬ 
cilli in above lé¬ 
sions. 
Other lymphatic 
ganglia, spleen, li- 
ver, lungs were the 
seatof extensiv tu- 
berculous lésion 
containing many 
tubercle Liacilli. 
Another group of experiments was conducted in which 
thin layers of milk were heated and evaporated at the 
sanie time. The température of the milk was raised from 
about 12°C. to 98°G. in less than 3 minutes, the material 
not being kept at the higher température for more than 3 
seconds. 
★ 
¥ ¥ 
The results of inoculation were practically the sanie as in 
the previous experiments. A cobaye, killed 5 weeks after ino¬ 
culation, i. e. at a time when sonie indication of inguinal 
swelling had begun to be noticeable, was found to hâve very 
slightly enlarged popliteal inguinal and sublumbar lymphatic 
ganglia, tubercle bacilli being demonstrable in each. There 
was no sign of any lésion at the seat of inoculation. The 
lésions were similar to those observable from 8 to 10 days after 
inoculation with unheated milk. 
The two last sets of experiments may be summed up as 
follows : 
1. Cobayes inoculated with untreated tuberculous products • 
rich in bacilli, developed at the seat of inoculation extensive 
tuberculous lésions in 2 weeks 
