EXTRACTS FROM EXCHANGES. 
569 
centimetres in length. The edges of the slit are sharp, as hav¬ 
ing been made with a sharp instrument. The walls of the ves¬ 
sels and the heart, carefully examined, showed no pathological 
alterations. The true cause of such a lesion failed to attract the 
attention of the author, who is inclined to attribute it to 
organic functional disturbance of the auriculo-ventricular open¬ 
ing of the right heart. 
Parotid Sadivary Calculi. —Mr. Massot suggests a 
slight modification in the general modus operaiidi practiced for 
their extraction from the duct of Stenon. He makes quite a 
large incision on the superior part of the canal and above the 
calculus, which he then pushes back towards the gland and 
towards the incisions he has made. When the stone is extracted 
the wound is closed by pine suture and dressed with carbo- 
lized white lotion. He has obtained three successes in ten days 
by the process.— i^Jottr 7 ial de Zodtedmie^ 
Epizootic Cerebro-Spinal Meningitis of Ovines \_By 
MM. Savig 7 it and Leblanc.'\. —Under this name the authors de¬ 
scribe in the Joumial de Zobtedmie an affection of ovines which 
they consider is yet comparatively imperfectly known, and, 
while they consider it as infectious, they are not yet positive as 
to the nature and causes of its appearance. Distinct from all 
other diseases, it is characterized by a series of somewhat spe¬ 
cific symptoms, which are described as follows : “Nothing abnor¬ 
mal indicates the development of the disease, the appetite is 
still good, but the external appearance of the animal is slightly 
modified; he seems to move lazily and remains lying down longer 
than usual. After two or three days there are prominent symp¬ 
toms, sometimes movements of the jaws, which often last until 
death. When food is presented, the patient rises, pushes his 
head in it, but takes none : he remains immobile in that posi¬ 
tion until the meal of his mates is over. The respiration is 
slightly accelerated. These manifestations last five or six days, 
then the paresis of the hind leg appears and with it difficulty of 
sight. The patients push to the wall, walk bunking against it 
or against anything that may be in the barn : they drop and re¬ 
main lying, constantly moving the 'jaws as if they were chewing 
a food which they do not swallow. Sometimes the symptoms 
of locomotion are the only ones present, and the animal can 
neither get up or stand up. At the outset, defecation is nor¬ 
mal. The urine is very rich in urea and contains a noticeable 
quantity of albumen. There is fever and the temperature rises 
to 40. 3° C. Death occurs towards the eighth, tenth, or twelfth 
