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instead of ducking the horses. One thorough treatment with tn<> 

 Beaumont crude petroleum will generally he found sullicient, a 

 oil remains in the coat, having heen noticeable by I'M -ling with the 

 hands and fingers thirty to forty days after treatment when the ani- 

 mals had not been exposed to rain. 



In exaggerated cases of the disease in which the skin had become. 

 Stiff, corrugated, and cracked it has likewise been observed that the oil 

 facilitates the healing of these lesions and a rapid return of the skin 

 to a soft, pliable, and normal condition. 



As the life history and characteristics of the Psoroptic mange mi to 

 of the horse, Psoro^tes communis equi, are practically the same as in 

 the case of the common mange mite of cattle, Psoroptes communis 

 lovis, it may reasonably be expected that an efficient remedy for 

 mange of cattle may be used with confidence in treating Psoroptic 

 mange in the horse. As previously stated in this bulletin, mange 

 flourishes best in winter and under conditions adverse to the animals 

 attacked. It is therefore easily detected in the winter and spring by 

 its effects on the animals, while during the summer months animals 

 may be harboring the parasites without showing, by their coats or 

 otherwise, evidences of infection. Hence the importance of the treat- 

 ment of all exposed animals in the fall of the year, even though they 

 have been thoroughly treated in the winter or spring. Fall treatment 

 should not, therefore, under any circumstances be neglected. 



In the treatment of horses for mange dipping is recommended, when 

 practicable. If no facilities for dipping are at hand the remedy should 

 be applied by spraying or mopping in a thorough manner, in order 

 that it shall be effective, not forgetting the necessity for rubbing in 

 ^well the dip liquid in all badly affected cases, or in badly affected 

 patches of each individual case. 



Sarcoptic mange of cattle, if it occurs, must be extremely rare in 

 this country, as no case has ever been brought to the attention of this 

 Bureau, while in the horse it is found to exist with comparative fre- 

 quency, and, unlike the Psoroptic variety, it can be conveyed from 

 the horse to man. In the Army soldiers have at different times suf- 

 fered from the disease through the Sarcoptic horse mange parasites 

 having been communicated to them from horses. The disease thus 

 communicated to man, however, tends to spontaneous recovery in 

 from fifteen to forty days. When transferred from the horse to other 

 kinds of animals (sheep and pigs) Sarcoptic mange has failed to pro- 

 duce irritation, and when this form of the parasite is transferred from 

 the horse to the dog and cat it lives but a few days. Notwithstanding 

 'this fact, Sarcoptic mange of the dog (Sarcoytes scabei, variety canis) 

 is the most common form of mange of the dog. 



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