PROGRESS OF VETERINARY SCIENCE AND ART. 
77 
the case was prolonged until the 21st of September, by 
which time she had sunk into a most deplorable condition, the 
cough being almost incessant and very distressing. A great 
quantity of fetid matter also was daily evacuated from the 
mouth and nostrils. 
Post-mortem examination. — The mucous membrane of the 
intestines was much thickened, more particularly within the 
caecum, from chronic inflammation. The diaphragm was like- 
wise very dark coloured, and the chest w r as filled with fetid 
matter. The parenchyma of the lungs w r as reduced in places to 
a pulpy mass, and the trachea was filled with a purulent fluid. 
Contemporary Progress of Veterinary Science 
and Art. 
By John Gamgee, 
Professor of Auatomv and Physiology in the Edinburgh 
Veterinary College. 
( Continued from p. 36.) 
Salivary Secretion. — In analysing M. Claude 
Bernard's work, I last month proceeded as far as the com- 
parative study of the special and differential characters of the 
secretion of each salivary gland. Our author next examines 
the mixed saliva w hich is the product of all the buccal glands. 
It contains — 1st. "Water; 2d. Organic matters, viz. — albumen , 
casein , epithelial scales , a little fat containing phosphorus 
(Tiedemann and Gmelin), mucus , a peculiar organic principle. 
3d. Inorganic substances, consisting of alkaline carbonates , 
earthy phosphates , chlorides , sulphates and lactates , and lastly 
the sulphocyanide of potassium. The existence of the latter 
body has given rise to much discussion among physiologists, 
many of w r hom have admitted its existence, such as 
Tiedemann and Gmelin, Wright, Mitsherlich, Dumas, 
Lehmann, &c. It, however, appears to exist there in virtue 
of chemical action under special circutnstauces. 
Besides the different kinds of saliva, there exist other 
distinct fluids with wLich the sali\a ie mixed in its passage 
from the mouth to the stomach, such as the nasal, lachrymal, 
and pharyngean fluids. M. Riquet has performed many 
experiments on the secretion of the mucous membrane lining 
the pharynx, and it appears that such secretion is very 
abundant, amounting, in the horse, to two gallons in the 24 
hours. It is intended to aid in deglutition. 
XXX. 11 
