120 
REVIEW OF BIOLOGY. 
with this disease. After a certain well (6 yards from the stable) 
furnishing the drinking water was closed no new cases ap¬ 
peared. Twenty-one sheep that drank from the well sickened 
and gave the same symptoms presented by the horses; I2 died 
and 9 were slaughtered. The disease finally died out. The 
author from the foregoing facts is inclined to assert the infec- 
o o 
tious nature of Borna’s disease.— (Berl. Thierdrzt. PFoc/i.) 
. Multiple Abscesses in the Heart of a Cow. —A six- 
year-old cow giving no previous history of illness except that of 
foot-and-mouth disease, and regularly performing her work, was 
suddenly seized with such excessive dyspnoea that the owner, 
fearing a fatal outcome, had her slaughtered. Autopsy .—The 
heart was enlarged one half; at the apex a prominent fluctuat¬ 
ing swelling appeared, which on incision gave vent to a dis¬ 
charge of putrid yellowish green pus; the wall of the abscess 
consisted of tough, leathery connective tissue cm. in thick¬ 
ness ; the internal aspect of the abscess wall was.rough and un¬ 
even and of a dark grey color; the pus sac extended deep into 
the mnsciilar structure of the heart, in fact, nearly into the en¬ 
tire area of the left chamber of the heart; smaller abscesses of 
similar structure were found scattered through the muscular 
structure of the right heart, throughout the muscular partition 
separating the heart chambers, one of which abscesses, the size 
of a fist, spread itself upon the right auriculo-ventricnlar valve, 
thereby causing the stenosis, which in turn caused the dyspnoea 
aforesaid. With the exception of two similar abscesses the size 
of an apple in the left kidney, no other organic lesions ap¬ 
peared. It is probable that these were metastatic abscesses, the 
result of foot-and-mouth disease one year previous. They are 
common after this disease.— Thierdrzt. IVoc/i.) 
REVIEW OF BIOLOGY. 
I. Action of Tannin upon the Bacillus of Tubercu¬ 
losis \By Mr. M. J. Sabrazes '\.—For the last few years there is 
a tendency to consider tannin as antituberculous ; but the 
teachings of the therapeutic clinic are too difficult to interpret 
to decide on the value of this indication. Lately, however, ex¬ 
perimental researches have been made, but their conclusions are 
not more positive. After a series of experiments the author has 
reached the following result: The association of solutions of 
tannin with the tuberculous bacillus in vitro and in the organ¬ 
isms of guinea-pigs, far from arresting the march of inoculated 
