660 
EXTRACTS FROM EXCHANGES. 
order that the loss in the capillaries may be made good, a soak¬ 
ing up by capillaries of the lymphatic fluids in the lymph spaces 
outside takes place. Then in all the blood-making organs a 
regeneration of corpuscles takes place, so that in 6 to 12 hours 
the blood regains its normal specific gravity and may in some 
cases even exceed it.—(. Bert . Thierarzt. IVoch.) 
Bactericidal Powers of Dog’s Blood with Special 
Reference to the Influence of Leucocytes Thereon.— 
D. and H. have made very interesting experiments upon the 
germicidal power of dog’s blood. As they discovered that cir¬ 
culating dog’s blood had a high bactericidal power, they tried to 
discover which element of the blood possessed this property- 
Upon using the blood serum no matter how obtained, i. e., blood 
minus most of its corpuscles, only faint bactericidal powers were 
noted. Upon filtering uncoagulated circulating blood, so that 
only the leucocytes remained behind upon the filter, there was 
practically no germicidal action at all of the filtered blood. 
Now inasmuch as the filtered dog’s blood differed from the un¬ 
filtered blood merely in the absence of the white corpuscles, one 
must regard these as the possessors of the germicidal power. If 
one examined a drop of filtered blood containing organisms 
under the microscope, in a few hours a marked increase in the 
number of organisms can be seen. If one adds a drop of circu¬ 
lating unfiltered blood thereto, one will find in 10 to 20 minutes 
that the micro-organisms have been taken up by the leucocytes; 
those taken up by the leucocytes invariably perish or degenerate 
(phagocytic action) ; whereas those micro-organisms which are 
still free of the leucocytes show no traces of degeneration.— 
( Berlin . Thierarzt. IVoch.) 
ITALIAN REVIEW. 
Bots in Horses. —Prof. Perroncito, of Turin, has already 
recommended the administration of sulphur of carbon to relieve 
horses from bots, which in some cases are so detrimental to gen¬ 
eral health. Given in capsules, this drug possesses such parasit¬ 
ical properties for other parasites (the phylloxera, for instance) 
that experiments with it were justified. Two Italian veterina¬ 
rians have used it and obtained excellent results. In one in¬ 
stance four capsules of 12 grammes of sulphur of carbon were 
given an hour apart, and followed the next day with castor oil, 
the experiment being carried on upon a herd of 15 colts. An 
hour after the administration of the drug-, there was abundant 
