930 
EXTRACTS FROM EXCHANGES. 
and one found bacilli only in the immobile elements. The en¬ 
dothelial cells, which unite with the cells of the deeper layers, 
quickly absorb the tubercle bacilli, swell up and divide, result¬ 
ing in the new formation which forms the tubercle. The new 
formation is infiltrated and covered with polymorphous leu¬ 
cocytes, but which are not contributing to the formation of the 
tubercular tissue. In regard to the curative action of tubercu¬ 
lin, B. points to the fact that the tubercles in the dogs treated 
with tuberculin were much more developed than in the control 
animals. Therefore, the increased tuberculous new formation 
in those can be considered as a favorable reaction of the svstem. 
The tuberculin increases the strength of the system, thereby 
enabling it to defend itself against the tubercle bacilli.— {Arch, 
de Med . Vet. Experim.') 
A Practical Iodide, of Potassium Infusion Appara¬ 
tus. —The apparatus which was constructed by Veterinarian 
Stampfl, from Wilhelmsburg (Austria), consists of a wide-neck 
bottle, with a capacity of about 1000 ccin. (2 pints), which 
is closed by a double perforated rubber cork. In one of these 
perforations is placed a short and in the other a long glass pipe, 
which reaches almost to the bottom of the bottle. The short 
glass pipe is connected with a rubber tube, about an inch long, 
to which an infusion catheter is applied. The rubber tube is 
closed by a spring stopper. For use the apparatus is filled with 
a solution of 10 grm. (150 grs.) of iodide of potassium in about 
800 grm. (2 pints) of water, and after closing with the cork it 
is turned over with the neck to the ground. After the opening 
of the spring-stopper the air enters the bottle, through the long 
pipe, and the solution will flow out through the catheter, by 
which it can be infused into the teats. To be able to divide the 
solution uniformly for the quarters of the mammae, the bottle 
may be graduated so that the quantity infused can be read off in 
an easy manner. Other superiorities of this apparatus are that 
the sterile solution will not become infected when the long glass 
pipe is closed with a piece of cotton. An infection of the mam¬ 
mae in this manner is almost impossible. This apparatus is so 
simple in construction that any one is capable of making one 
for himself.— {Thierarztl. Centralblatt.) 
Cooling Ointments. —Unna recommends cooling oint¬ 
ments of the following composition : (1) Zinci oxydati, 15.0 ; sul- 
furis, 15.0; terr. silic, 10.0. M. ft. purge. (2) Magnes. carbon., 
2.5 ; aqua destill., 5.0; M. adde vaseline, 5.0. (3) Adipis lanae, 
20.0; ol. rap., 10.0; aqua destill., 30.0. (4) Ugt. lement, 10.0; 
