-AS Veterinary Elements. 



time are not known. Enlargement of these glands occur 

 in animals, the condition being known as Goitre, very 

 often a serious trouble in breeding ewes, serious because 

 the progeny of such ewes die at or soon after birth. The 

 thymus gland or sweetbread while well developed in the 

 young animal tends to disappear, shrivel up, as the ani- 

 mal grows older. It is interesting to note the demand 

 for this gland, seventy cents a pound, wholesale, being 

 obtained for it in Chicago — that is, for calves sweet- 

 breads: two-year old sweetbreads are not as valuable, 

 they eventually turning into fat. The liver is the largest 

 secreting gland in the body and is situated behind the 

 diaphragm. The function of the liver is to secrete 

 bile, a fluid greenish yellow in color and bitter to the 

 taste. The liver is brown in color and is enclosed in a 

 membrane known as Glisson's capsule, which sends in 

 leaf-like processes between the lobules; each lobule is 

 made up of blood vessels, liver cells and ducts. There 

 is a peculiarity about the blood supply of the liver, com- 

 ing as it does by two vessels, the hepatic artery fetching- 

 blood to nourish this important organ, the portal vein 

 bringing functional material from the intestines, namely, 

 blood, to be acted upon. The hepatic vein conveys away 

 the purified blood from the liver and empties it into the 

 general circulation. The hepatic duct conveys the bile 

 from the liver and joins the duct of the pancreas before 

 discharging its contents into the intestine. In cattle, 

 sheep and pigs the bile is stored in what is known as the 

 gall bladder; the horse has no gall bladder; bile becomes 

 concentrated in the gall bladder. In the horse the secre- 

 tion of bile seems to be continuous, a maximum amount 



