Mites Injurious to Domestic Animals. 31 



becomes emaciated, the crusts increase in thickness and extent, 

 whilst ridges appear on the skin, which is cracked and ulcerated. 

 A very offensive fluid is discharged by the cracks and ulcers, the 

 limbs become swollen, etc. The working capacity of camels suffer- 

 ing from scabies is much reduced, and death may finally take place 

 through exhaustion or from complications with other diseases. 

 The variety of Sarcoptes scabiei found on camels is transmissible 



FIG. 13. 



Cnemidocoptes mutans. The mite of scaly-leg in fowls (p. 51). 

 view of female, x 174. (Original.) 



Dorsal 



to man and also to horses. Mason has used colocynth tar (distilled 

 from the seeds of Citrullus colocynthus) successfully against sarcoptic 

 mange in camels, and also in sarcoptic and psoroptic mange in 

 horses, and against ticks. Before applying this remedy, the camel 

 should be clipped, washed with soft soap, and the crusts scraped 

 off with a blunt knife. 



Ointments with a fatty basis are apt to become rancid in hot 



