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EXTRACTS FROM GERMAN JOURNALS. 205 
tuted. The horses had been quartered in the stables, whose 
floor was somewhat damp, for ten years., but up to the pres¬ 
ent time no deleterious effects were noticed. This was divided 
into three portions. During the period included between 
1882 and 1892, only nine cases of periodic ophthalmia had oc¬ 
curred in the whole regiment. 
Examination of all the animals of this company revealed 
numerous alterations of varied pathological importance, em¬ 
bracing opacity of the lens, nuclear cataract, adhesion of 
the iris and capsule. 
Fifteen individuals of various ages were attacked since 
autumn; in all cases the first symptom was indicated by pho¬ 
tophobia, which lasted eight to twenty-one days ; with one 
exception the disease began in one eye. Recurrence of the 
disease took place in from ten to twenty-eight days, but in 
those animals becoming afflicted in the autumn not until six 
months after the primary appearance. 
The facts as given undoubtedly permit the conclusion 
that the interior structure of the eye was the seat of an insid¬ 
ious inflammatory process. The younger horses were uni¬ 
formly exempt from the affection. The cause, whatever it 
may have been) had commenced its encroachment upon the 
stock in 1891 and 1892. 
Schwarznecker examined the local drinking water fur¬ 
nished the horses, using VVillach’s and his own method, and 
discovered therein evidence of vegetable and infusorial life, 
together with a species of minute round worms. 
The contents‘of one patient’s eye proved nothing. Later, 
another one of the horses was killed, but the search of the 
aqueous and vitreous humors yielded negative results. In 
another case, however, examined post-mortem, three examples 
of a small, round worm were discovered in the vitreous humor 
(species described by Willach), together with an egg-shaped 
formation of double contour and cellular contents in the aque¬ 
ous humor. (Upon this single section and record we cannot 
presume to draw conclusions.) This but agrees with the ob¬ 
servations made in Saarburg* upon the unusual contagion of 
* Berl. Tliier. Woch. No. 33, 1892. 
