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disease. It is essentially a recurrent disease, and repeated attacks 
usually terminate in corneal alterations. 
(e) Vesicular keratitis is a disease that is not very common 
in lower animals. The vesicles contain a clear fluid which 
accumulates and ruptures, leaving superficial ulcers, and should 
receive the same attention as superficial keratitis or ulceration 
of the cornea. There is no doubt that the disease is due to a 
dyscrasia of some kind, and that the affection is mycotic. 
(/) Parenchymatous keratitis is not so common in domestic 
animals as some of the other forms of corneal inflammations or 
diseases. The disease usually begins with a grayish opacity in 
the substance of the cornea, and gradually extends until it in¬ 
volves the entire corneal surface. The course of the disease is 
very slow and may extend to both eyes. It may run for months 
and eventually clear up, while some cases will terminate in 
ulceration or hypopyon. The disease itself is not an indication 
for paracentesis, but some of its sequelae are ulceration of cornea 
and hypopyon may be benefited by such surgical interference. 
Keratocele and periodical ophthalmia have been successfully 
treated by paracentesis. Hernia of cornea, if relieved of the 
pressure from within, will heal very readily. Periodic ophthalmia 
(or recurrent ophthalmia') is a condition that is successfully 
treated by relieving the intraocular tension by paracentesis, with 
the administration of therapeutic agents indicted to improve 
the condition of the patient. 
EXTRACTS FROM EXCHANGES. 
GERMAN REVIEW. 
— 
By Adolph Eichhorn, D.V.S., Bureau of Animal Industry, Milwaukee, Wis. 
■ ■ ■ ■ , , 
The Resisting Power of the Virus of Rabies Against 
Decomposition \Prof. S. von Ratz, Budapest ].—Hartwig ob¬ 
served that inoculations with the saliva of rabid dogs, after a 
lapse of 24 hours, became non-effective, and that the virus of 
rabies, in decomposition, loses virulency very soon, while Pas¬ 
teur proved that in advanced decomposition the virus retains 
virulence for four to five days. Mergel, on the other hand, in¬ 
oculated the decomposed brain of fourteen days standing, of a 
wolf, with success, and similar were the results of Galtice. 
Russo-Travali and Brancolcone also studied and observed care¬ 
fully this question, and found that in decomposing cadavers 
