498 



animal is aroused from its condition l)y the excessive pain produced 

 in the feet, and assumes the position of a foundered horse; that is, if 

 the fore feet alone are affected the}' are carried forward until they 

 rest on the heels, and if the hind feet are affected all of the feet are 

 carried forward resting on their heels, the hind ones as near the center 

 of gravity as possible. In some cases the stupor of the animal is so 

 great that the i)ain is not felt, and little or no alteration of the posi- 

 tion of the animal is noticeable. The foot is found hot to the touch, 

 and after a given time the depressed convex sole of the typical founder 

 is recognized. Other complications may occur, due to the action of 

 exciting causes, and we may have a severe corysa, laryngitis, pharyn- 

 gitis, or even congestion of the kidneys, followed by nephritis, con- 

 gestion of the spleen or of any other organ. 



Pleurisy. — This is a rare complication, but when it does occur it is 

 ushered in by the usual s^nnptoms of depression, rapid pulse, small 

 respiration, elevation of the temperature, subcutaneous a?dema of the 

 legs and under surface of the belly, and we find a line of dullness on 

 either side of the chest and an absence of respiratory murmur at the 

 lower part. It is usually severe, and we find an effusion filling one- 

 fourth to one-third of the thoracic cavity in from thirty-six to forty- 

 eight hours. 



The laryngo-bronchitis is not a frequent complication nor a very 

 serious one. It is ushered in b}" a cough, which is rough and fatty, a 

 purulent discharge from the nostrils and an enlargement of the sur- 

 rounding lymphatic ganglia. 



Pericarditis is an occasional complication of influenza, never occur- 

 ring alone or in connection v.ith other organs in the chest cavity. It 

 is ushered in by chills, elevation of tlie temperature ; the pulse becomes 

 rapid, thread}', and imperceptible. The heart murmurs become indis- 

 tinct or can not be heard. A venous pulse is seen on the line of tlie 

 jugular veins along the neck. Respiration becomes more difficult 

 and rapid. If the animal is moved the symptoms become more marked, 

 or it may drop suddenly dead from heart failure. 



Peritonitis, or inflammation of the membranes lining the belly and 

 covering the organs contained in it, sometimes takes jjlace, The gen- 

 eral symptoms are similar to those of a commencing pericarditis. The 

 local symptoms are those of pain, especially to pressure on side of the 

 flanks and belly; distension of the latter, and sometimes the formation 

 of flatus or gas, and constipation. 



Diagnosis. — The diagnosis of influenza is based upon a continued 

 fever, with great depression and sj'mijtoms of stupor and coma; tlie 

 rapid, dark saffron, ocher, yellowish discoloration of the mucous mem- 

 branes, swelling of the legs and soft tissues of the genitals. When 

 these symptoms have lasted for a greater or less time, the diagnosis of 

 the localization of the fever or complication is based upon the same 

 symptoms that are i^roduced in the more local diseases from other 



