THE MICROBE OF PLEURO-PNEUMONIA. 383 
not inoculated (to be used as witness ); a second, the same bouil¬ 
lon, to which has been added i-io of the serosity collected on 
July 19; the third, a dilution to i-iooo of the same serosity. 
The two tubes of inoculated bouillon, which has been used to 
fill the collodion bags, are put in observation ; they remain 
sterile. The first two collodion bags are placed in the perito¬ 
neum of a rabbit (b, ii6); the third one in the peritoneum of 
another rabbit (c, 135). 
The two rabbits are killed August 17. The two bags of 
rabbit b, 116 are intact; the bag witness (bouillon not inocu¬ 
lated) is absolutely limpid ; the other is very cloudy ; the liquid 
is swarmed by the small refringent mobile points observed be¬ 
fore. The bag of rabbit c, 135 contains an opal liquid, less 
cloudy than the other; it also contains a great number of mi¬ 
crobes. 
With the culture of rabbit b, 116 two other dilutions are 
made and put in collodion bags ; one of these (dilution to i-ioo) 
is placed in the peritoneum of a rabbit (i, 41); the other (dilu¬ 
tion to i-iooo) in the peritoneum of another rabbit (i, 79). 
These two rabbits are killed September i ; the contents of 
both sacs is cloudy and full of the refringent points already 
described. Sept. 2 the liquid from the bag of rabbit i, 79 is 
inoculated to a fresh Breton cow (No. 2); the other is used for 
two other bags which are inserted in the peritoneum of two 
rabbits: No. 48 (dilution to 1-200), and No. 92 (dilution to 
1-500). 
Rabbit No. 92 dies Sept. 9, cachectic, without apparent vis¬ 
ceral lesions; the bag is intact, the liquid is cloudy and con¬ 
tains nothing else than the ordinary refringent points. A 
dilution to 1-60 is made with it and put in two bags which are 
placed in the peritoneum of a rabbit. No. A, 357. Let us say 
now that, at the post-mortem of this rabbit, both bags were 
found broken, and that that series of passages of cultures was 
thus interrupted. 
Rabbit 48 is killed Sept. 18 ; he is very thin ; the collodion 
bag is intact, and contains a very cloudy fluid, full of the ordi- 
