208 POULTRY DISEASES AND THEIR TREATMENT. 



Pericardium. — The membranous sac which contains the heart. 

 Peristalsis. — The worm-like movements of the intestine and oviduct bj- 



which the contents of these tubes are propelled. 

 Pc;-;'io»;7(\s.— Intlammation of the peritoneum or the membrane lining the 



abcJominal ca\ily. 

 Pliaryn.v. — That portion of the alimentary canal between the mouth and 

 the oesophagus. It also communicates with the- 

 larynx and nasal passages at its upper end. 

 Prognosis. — Th?. prospect as to recovery from a disease or a forecast 

 as to the probable result of an attack of a disease. 

 Protoplasm. — A viscid granular material which forms the essential con- 

 stituent of the living cell. Living subslance. 

 Protozoa. — A class of unicellular animal micro-organisms. 

 Provcntricuhis. — That portion of a bird's alimentary canal lying be- 

 tween the crop and the gizzard. Often called the 

 stomach. 

 Puncliform hemorrhages. Presenting the appearance as if punctured 

 by a large number of fine prickle or needle holes- 

 from which the blood oozes. 

 Purgative. — Causing evacuations of the bowels. 

 Pyaemia. — Blood poison due to microbic origin. 



Sarcoma. — A kind of tumor or cancer not always of a malignant nature. 

 Scabies. — A contagious skin disease caused by a mite. 

 Sclerotic. — Pertaining to the hard white tibrous membrane which with- 



cornea forms the outermost coats of the eyeball. 

 Serum. — The clear liquid which separates from the clot and the corpus- 

 cles in the clotting of blood. 

 Spleen. — An oval shaped organ normally about one-half inch in diameter 

 and of a dark red color. It lies immeolately above 

 the liver and between that and the proventricv.lus. 

 Spore.~The reproductive cell of many protozoa and of. many lower 

 plants. It is usually enclosed in tough membranes 

 and is difficult to kill. 

 Stigma. — See p. 157. 

 Subcutaneous. — Beneath the skin. 



Sub-mucosa.—The layer of tissue situated beneath the mucous mem- 

 brane. 

 Syncope (sin-ko-pe).— Fainting. Failure of the heart's action. 

 Trachea. — The windrpipe. 

 Traumatic. — Caused by an injury. 



Therapeutic— -PertRimng to the art and science of healing. 

 Urate.— A salt of uric ■ acid. A product of the secretion of the kid- 

 neys. The white part of a fowl's droppings 

 Ureters.— The tubes leading from the kidneys to the cloaca. 

 Uterus. — See p. 158. 

 Vagina.— Th^t portion of the oviduct between the shell gland and the 



cloaca. 

 Virulent.— 'Exiremely poisonous or dangerous. 

 Virus.— Any animal poison, especially one produced by an-i capable of 



transmitting a disease. 

 Viscera.— The internal organs "^ -' ■ l aHy^-^g 



