ox pt:s. 
47:^ 
bable that, after the rupture, the blood continued to ooze slowly 
out of the coronary artery into the pericardic bag, and when this 
was as full as it could be of blood, the horee died. 
Magazin fur die gesammte Thierheilkutide. 
ON PUS. 
THE MEANS OF RECOGNIZING THE PRESENCE OF PUS IN 
THE DIFFERENT FLUIDS WITH WHICH IT MAY BE MIXED, 
AND PARTICULARLY IN THE BLOOD. 
By M. Al. Donne. 
In a memoir published by this gentleman in the Archives 
generales de Medeciue, he has endeavoured to explain the manner 
in which pus may be detected in the following fluids : the serum 
of the blood—the serosity—the mucus of the saliva—an aque¬ 
ous solution of albumen—bile—urine—semen—pure milk—milk 
having undergone certain changes—colostrine and blood. He 
found the characters presented by the pus to be two in number. 
1st, its being transformed by ammonia into a transparent and 
tenacious jelly. This effect is equally appreciable in a small por¬ 
tion of pus diffused in water. 2d. The same re-agent does not 
change any of the properties of the blood. By the former of these 
properties, the pus in the first nine of these substances is distin¬ 
guished ; and by the second, the dift'erence of the blood. These 
characters, however, although generally to be relied on, are not 
always infallible. 
He has also compared the difference between the globules of pus 
and those of blood, and he has obtained the following results:— 
The globules of pus are. The globules of blood are, 
Is^. Spherical. Globular. 
2d. Of xrWth partof a mini- 2d. Their greatest diameter 
metre in diameter. does not exceed TjWth part 
Sd. Wrinkled or furrowed. 
4M. Terminated by a fringed 
border. 
5th. Traversed by lines, 
which cross each other, and give 
an appearance of mesh-work. 
Gth. Without any appre¬ 
ciable nucleus. 
7th. Not changed by ammo¬ 
nia. 
These characters are not in¬ 
variable. 
of a millimetre. 
Sd. Smooth. 
4th. Terminated by a plain 
border. 
5th. Presenting no reticulat¬ 
ed appearance. 
6th. Having a central nu¬ 
cleus. 
7th. Entirely insoluble in 
ammonia. 
3 R 
VOL. XI. 
