482 



becomes more rapid, and at times, for a short period, more tense and 

 full, but the previous poisoning of the specific disease has so weakened 

 the tissues that it never becomes the characteristic full, tense pulse of 

 a simple pneumonia. 



On percussion of the chest dullness is found over the inflamed areas ; 

 on auscultation at the base of the neck over the trachea a tubular 

 murmur is heard. The crepitant rales and tubular murmurs of pneu- 

 monia are heard on the sides of the chest if the pneumonia is periph- 

 eral, but in pneumonia complicating influenza the inflamed portions 

 are frequently disseminated in islands of variable size and are some- 

 times deep seated, in which case the characteristic auscultory symptoms 

 are sometimes wanting. From this time on the symptoms of the ani- 

 mal are those of an ordinary grave pneumonia, rendered more severe 

 by occurring in a debilitated animal. After resolution, however, and 

 absorption into the lungs convalesenco is rapid, and recovery takes 

 place perhaps more quickly than it does in the simple form of the dis- 

 ease. There is a cough, at first hacky and aborted, later more full and 

 moist, when we have a discharge from the nostrils which ismuco puru- 

 lent, purulent, or hemorrhagic. As in simple pneumonia, in the outset 

 this dischare may be " rusty," due to capillary hemorrhages. We find 

 that the blood is thoroughly mixed with the matter, staining it evenly 

 instead of being mixed with it in the form of clots. At the commence- 

 ment of the complication the animal may be subject to chills, which 

 may again occur in the course of the disease, in which case, if severe, 

 an unfavorable termination by gangrene may be looked for. If gan- 

 grene occurs, ushered in by severe chills, a rapid elevation of tempera- 

 ture, a tumultuous heart, a flaky discharge from the nostrils, and a fetid 

 breatb, the symptoms are identical with those which occur in gangrene 

 complicating other diseases. 



Com2)lication of the hrahi.— At any time during the course of the dis- 

 ease, at an early period if the fever has been intense from the outset, 

 but more frequently after three or four days in ordinary cases, a con- 

 gestion of the brain may occur. The animal, which has been stupid and 

 immobile, becomes suddenly restless, walks forward in the stall until it 

 fastens its head in the corner. If in a box stall and it becomes dis- 

 placed from its position, it follows the wall with the nose and eyes, rub- 

 bingagainst it until it reaches the corner and again fastens itself. It may 

 become more violent and rear and plunge. If disturbed by the entrance 

 of the attendant or any loud noise or bright light, it will stamp with its 

 fore feet and strike with its hind feet, but is not definite in fixing the 

 object which it is resisting, which is a diagnostic point between menin- 

 gitis and rabies, and which renders the animal with the former disease 

 less dangerous to handle. If fastened by a rope to a stake or post the 

 animal will wander in a circle at the end of the rope. It wanders al- 

 most invariably in one direction, either from the right to left or from 

 left to right, in different cases, which is dependent upon a greater con- 



