THE DIAGNOSIS OF DISEASE 501 



External Symptoms and the Diseases which they Indicate. 



(From Bulletin published by Maine Experiment Station.) 

 Symptoms. Diseases Indicated. 



Abdomen swollen Peritonitis; dropsy; white diarrhoea. 



Belching of gas Inflammation of the crop. 



Breathing abnormal, i.e., too All diseases of the respiratory system; arsenic 

 slow, too rapid, wheezing, poisoning; pericarditis; gapes; air-sac mite, 

 whistling, or snoring. 



Choking Arsenic poisoning. 



Comb pale Tuberculosis; dropsy; air-sac mite; infectious 



leukaemia; white diarrhoea. 



Comb first pale but later dark.. Enteritis. 



Comb very dark Liver disease; blackhead; congestion of lungs; 



pneumonia. 



Comb yellow Liver disease; visceral gout. 



Comb with white powdery scurf .White comb. 



Constipation Simple constipation; indigestion; inflamma- 

 tion of the oviduct. 



Convulsions Arsenic poisoning; copper, lead, or zinc 



poisoning; epilepsy; harvest bug. 



Cough Diseases of the respiratory system. 



Crop enlarged and hard Crop-bound. 



Crop enlarged and soft Inflammation of the crop; enlarged crop; 



gastritis. 



Diarrhoea Diseases of the alimentary tract; poisonings 



of all kinds; blackhead; tuberculosis; 

 cholera; roup; white diarrhoea. 



Emaciation Tuberculosis; aspergillosis; visceral gout; 



mites; white diarrhoea. 



Eye, expansion of pupil Arsenic poisoning. 



Eye, sticky discharge from Catarrh; roup. 



Face swollen Roup. 



Droppings bright emerald-green. Cholera. 



Fever, very pronounced Peritonitis; aspergillosis; infectious leukaemia; 



inflammation of the oviduct. 



Lameness Tuberculosis; aspergillosis; rheumatism; scaly 



legs; bumble foot. 



Legs, roughened with scales 



raised. Scaly legs. 



Mouth, mucous discharge Congestion of the lungs; pneumonia; gapes. 



Mouth, white, cheesy patches. .Roup; canker. 



Neck bent back Poisoning; congestion of the brain; wry-neck. 



Neck limp Limber neck. 



Paralysis Poisoning; apoplexy; heat prostration. 



Saliva, abundant secretion Arsenic poisoning. 



Skin, scaly and incrusted Body mange; favus. 



Staggering Congestion of the brain; leg weakness. 



Thirst, excessive Hypertrophy of the liver; peritonitis; asper- 

 gillosis, tapeworms. 



Tongue, hard and dry Pip; diseases of the respiratory system. 



Tumors on head '. Roup; chicken pox. 



Urates yellow . . .Cholera. 



Vent, mass of inflamed tissue 



projecting from. Prolapsus of the oviduct. 



Vent, skin inflamed with yellow 



discharge and offensive odor. Vent gleet. 



