KOVAL AND CENTRAL SOCIETY OF AGRICULTURE. 507 
sulphate of zinc has also been frequently found very successful 
in cases of the latter description. 
We have received from M. Loiset, Veterinary Surgeon to the 
Northern Department, a voluminous manuscript entitled “ Hy- 
groma,” and sero-synovial bursap in domesticated animals. 
This work is divided into two parts : in the first the author 
treats of the sero-synovial tissue, or of serous bursae in general. 
These bursae, the coats of which are very thin and of a serous 
character, constitute little vesicles, kinds of bags closed up on 
every side, which are found in the midst of an abundant cellular 
tissue between those parts which exercise the greatest degree of 
motion on each other, and their intention is to diminish the 
friction. After some luminous considerations with regard to 
these organs, taken collectively, and of which few anatomists 
have hitherto spoken, the author proceeds to indicate their posi- 
tion, and the mode of discovering them by dissection. He then 
enters into a minute description of each of these bursae ; after 
having divided them into bursae of the trunk and bursae of the 
limbs, and subdivided them as attached to the anterior and pos- 
terior limbs, pointing out to which of them each belongs. The 
number of serous bursae which he describes are twenty-four, the 
principal of which, considering the frequency and dangerous 
character of the diseases of which he supposes them to be the 
seat, are the atloi'dean, the dorso-spinalis, the prerotulienne, and 
the olecranienne. 
The second part treats of hygroma. This affection consists 
in dropsy of the sero-synovial bursae. M. Loiset commences by 
giving a general sketch of this disease : he then offers a detailed 
description of all its characters, relates those complications which 
tend to aggravate it, the transformations which it undergoes, 
and the differences which distinguish it from phlegmon, cys- 
tisis, &c. 
M. Loiset subsequently proceeds to give an account of hy- 
groma, considered with reference to each of the sero-synovial 
bursae, and he furnishes examples of each of these affections de- 
rived from his practical experience ; the number of these cases 
amounts to twenty-four. 
When treating of hygroma of the atloi'dean bursae, of which 
he gives a drawing, the author adds an excellent description of 
that disease, which is usually known by the name of poll-evil, 
which he makes to consist primitively and exclusively in this 
species of affection. The course of treatment which he recom- 
mends is one of the best that could be pursued, and he adheres 
strictly to the surgical proceeding that has been taught in our 
schools. This article alone extends through not less than forty- 
