iExtractiS from SoHvnal^, dForcign antt I^ome^ttr. 
OBSERVATIONS ON HYDROCEPHALUS IN THE 
HORSE. (STAGGERS). 
By M. C. Lesson A, Director of the Royal Veterinary School, 
Turin; with Annotations, by 5. B. C. Rodet, Professor of 
the Royal Veterinary School, Alfort. 
(Continued from p. 126.) 
Case 11. Is of a similar description and result to the last, 
excepting a few unimportant particulars:—The disordeiTingered 
for some time, and was at length excited into action by some 
spreading, untoward, cutaneous ulcerations in the hind extre¬ 
mities, which occasioned spasms and intense suffering. An 
intermission was obtained; but a sort of stupidity left behind 
showed that the disease, though suspended, was not subdued. 
In this state of absence of inflammatoiy re-action, the owner 
objecting to my proposal of inserting a seton in the neck, 
though, after being weaiy of waiting for spontaneous amend¬ 
ment, he desired me to adopt some decisive measures, willing to 
take the chance of good or harm resulting from them, I de¬ 
termined on exhibiting an ounce of aloes. It took effect; but 
the irritation it excited in the alimentaiy canal so exasperated 
the cerebral lesion that three days afterwards the animal died. 
Examination, —More intense inflammation of the alimentaiy 
canal, the consequence of the unseasonable administration of 
the purge. The brain itself free from signs of inflammation, 
although its substance was injected with a serous limpid fluid 
similar to that with which the lateral ventricles and other cere¬ 
bral cavities were all greatly distended. 
Case III. The symptoms, similar at the commencement, 
/assumed afterwards the lethargic character, and ended in fu¬ 
rious delirium. There was no local excitant, unless a cutaneous 
disorder consisting in hei'petic incrustations can be so considered. 
Besides phlebotomy, from the mammillary as well as the jugu¬ 
lar veins, and clysters, two setons were inserted in the neck, 
which caused such inflammation that scarifications, fomentation, 
&c. became necessary. 
‘‘Annot. VII. A fresh instance of the danger there is, in these 
disorders, in applying derivatives in the vicinity of the disease, and 
before any marked remission of the cerebral irritation has been obtain¬ 
ed. By derivatives are meant setons or other means producing a fresh 
irritation, and one that, so far from working a salutary revulsion in the 
skin, for which purpose such agents are designed, can only serve to 
