362 
REYIEW OF BIOLOGY. 
Experimental Lesions of the Liver by Intra-venous 
Intections OF Microbian Toxines [By MM. Teissier and 
GuinardA .—If two cubic centimeters only of toxine methodi¬ 
cally sterilized and obtained either from a culture of the bacillus 
of Loefler, or one of the pneumo-bacillus liquefaciens of Arlomg, 
are infected, one may rapidly see (sometimes after 13 or 14 
hours, as this occurs when the injection lias been pushed in the 
portal vein) extensively marked alterations in the liver. These 
observations, made upon more than 25 dogs and 15 rabbits, 
show that microbian toxines are apt to produce alone and, so to 
speak, immediately, without the intervention of the micro-organ¬ 
isms very severe lesions of the liver, which resemble entire y 
those described by Hanot and Gaston under the name of injec¬ 
tions liver. These lesions are susceptible by their serious na¬ 
ture, and specially their extent, to explain the sudden appear¬ 
ance of the highly acute accidents which take place clinically 
after some microbian infections, such as diphtheria. (Ibid.) 
Upon the Propagation of Tuberculosis of Cattle by 
Faecal Matters [By MM. Cadbac andBournay ].—Previous 
researches which we have made have shown that the bacilli of 
Koch swallowed by dogs pass through the digestive tract of 
those animals and are found intact in the faecal matters, 
the case with cattle ? Everything seems to show the contrary. 
These animals are the soil of production of the microbe of tu¬ 
berculosis. Its digestive canal is well disposed to hold it, nx it 
or absorb it. The rumen permits the alimentary and infectious 
masses to gather in it and to remain in it a long time the oma¬ 
sum and the many leaves, whose action is purely mechanical, by 
their arrangement permit the microbes to remain 111 them with¬ 
out being destroyed. Those which pass through enter the in¬ 
testines, where they are absorbed at the intestinal villi as shown 
by the experiments of many. If this absorption be total or 
partial is not known. And yet this is an important question o 
the point of view of the hygiene and prophylaxy of tubercu¬ 
losis. Indeed, if the bacilli of Koch are not all absorbed, the 
phthisical animal, which swallows the virulent matters as they 
are expectorated, or which eliminate on the surface of the in¬ 
testinal mucous membrane the bacilli developed on a level witli 
the ulcerated Peyer’s patches, contribute to the extension ot the 
disease through the faecal matters. We have tried to veri \ us 
mode of contagion. To a one-year-old bull we have given tor 
four days a meal composed of hay and tuberculous lung, \ ory 
rich in bacilli, taken from an adult cow. For four consecutive 
