• 515 



turpentine. (Tuqx-ntino 1 ounee, vajter half bucket.) External fric- 

 tions of alcohol and turpentine, Avith hot packs to the loins, v.ill also 

 affoi-d relief. Quinine and salicylic acid may bo used during the ele- 

 vation of temperature. Professor Dieckerhotf recommends tracheal 

 injections in ounce doses of the following solution: Acetate of alumi- 

 nium, 1 per cent; alum, one-half to 1 per cent; bromide of potash, 

 1 to 2 per cent; water, 100. 



CEDEMATOUS PNEUMONIA. 



Syxoxyms: Adj-namic pneumonia; hospital or stable pneumonia; 

 influenza; Pectoralis equorum; pleuro-pneumonia; Contagiosa equo- 

 rum; Brustseuche, German. 



Definition.— Thin disease is the adynamic pneumonia of the older 

 . veterinarians wlio did not recognize any essential difference in its 

 nature from an ordinary inflammation of the lungs, excejit in the 

 profound sedation of the force of the animal affected with it, which 

 is a prominent symptom from the outset of the disease. Again, this 

 same prostration of the vital force of the animal, combined vrith the 

 staggering movement and want of coordination of the muscles of 

 the animal, caused it for a long time to bo confounded with influenza, 

 with which at certain periods it certainly has a strong analogy of 

 symptoms, but from which, as from sporadic pneumonia, it can be 

 separated very readily if a case can be followed throughout its wliole 

 course. 



(Edematous pneumonia is a specific inflammation of the lungs, pro- 

 ducing an interstitial oedema and inflammation of the tissues of these 

 organs, and a constitutional disturbance or fever of a low or adynamic 

 f 3-pe. It causes a profound sedation of the nervous system which may 

 be so great as to cause death. It is sometimes attended by pleurisy, 

 inflammation of the heart, or septic complications which also nrove 

 fatal. 



EtioJogp. —While, as an infectious disease, its original cause is due 

 to a specific virus, there are many predisposing causes which act as 

 important factors in aiding in its development. Old horses, espe- 

 cially those which have been rendered antemic or debilitated by hard 

 use or by diminished quantities of food, and those which are obliged 

 to work constantly in Avater or are exposed to continual cold and wet, 

 as in the ease of canal horses, old hack horses and their congeners' 

 and those younger animals which liave a sudden weakened vitality 

 produced by being put too rapidly to work, or to too hard work before 

 their muscles arc hardened and their organs have been accustomed 

 loathe unusual demands placed upon them by want of training, are 

 much more susceptible to the contagion than adult animals in a good 

 condition of health. Lymplmtic, narrow-chested, thick-hided, and 

 big-hoofed animals will contract the disease much more easily than 

 the finer-skinned, richer-muscled animal of a sanguinary tempera- 

 ment and robust constitution. 



