206 POULTRY DISEASES AND THEIR TREATMENT. 



Contagious. A disease which is communicable by direct contact. 



Co/'»/o<io».— Sexual intercourse. With fowls "treading." 



Cornga.— The hard transparent structure forming the anterior part of 

 the eyeball. 



Creolin.—A thick black liquid coal tar preparation. It has antiseptic 

 properties. 



Cresol. — A coal tar product with antiseptic and germicidal properties. 



Cyst. — A sac-like growth which usually contains a liquid or a semi-solid. 



Demulcent. — A soothing mucilaginous or oily medicine. 



Dermoid cyst. — A form of congenital cyst often containing skin-like 

 structures. 



Diuretic. — A medicine that increases the activity of the kidneys. 



Bcchymoses (ek-kim-o-ses). — Discoloration of the skin caused by blood 

 outside of the blood vessels as in a bruise. 



Emaciated. — Very lean or wasted condition of the body. 



Enema. A liquid injection in the rectum or cloaca. 



Enteritis. — Inflammation of the intestine. In h man medicine confined 

 chiefly to the small intestine. 



Epidemic. — A disease that is widely prevalent in a comnrunity or locality. 



Epidermis. — The outer or non-vascular layer of the skin. The cuticle. 



Epithelioma. — A cancer or malignant tumor consisting chiefly of cells 

 derived from the skin or mucous membrane. 



Epithelium. — The covering or outer layer of the skin and mucous mem- 

 branes. 



Ergot. — A fungus which affects and finally replaces the seed of a cereal 

 grass. Used chiefly in connection with the ergot of 

 rye which is poisonous to poultry. Ergot as a drug 

 has the property of causing the mammalian uterus 

 to contract. 



Etiology. — The causation of any disease. 



Exudate. — A substance thrown out of the body or deposited in a tissue 

 by a vital process. 



Feces.— 'The. excrement or undigested residue of the food discharged 

 from the intestines. Dung. Droppings. 



Flagellate micro-organism.~Any minute microscopic organism which 

 swims through the water by means of the lashing 

 of one or more hair-like structures (flagella). 



Follicle. — See p. 157. 



Gall bladder.— The reservoir for the bile or gall secreted by the liver. 

 It is readily seen on the upper side of the liver. 



Callus domesticus.— The scientific name for the domestic fowl. 



Gangrene.— See p. 174. Gangrene of oviduct. 



Gastritis. — Inflammation of the stomach. 



Hermaphrodite.— An organism which has both male and female re- 

 productive organs. 



Hemorrhage.— -Bleeding. A copious escape of blood from the vessels. 



Hepatic. — Pertaining to the liver. 



Hyperaemia. Excess of blood in any part of the body. 



