Commoji Ailments. 119 



owing to the fact that It is bedded so deeply 

 in the thickened skin that remedies that 

 are absolutely safe to use will not readily 

 penetrate deep enough to reach the in- 

 truder. 



Some writers claim that under certain 

 conditions mange will be produced spon- 

 taneously ; this, however, is as preposterous 

 as it Is erroneous, and will so remain until 

 the laws that govern the reproduction of 

 life shall be radically changed. That a 

 filthy or enfeebled animal is more likely 

 to contract contagion, when exposed to it, 

 than would be the case were he cleanly 

 and in perfect health, I will readily grant ; 

 but whether he be filthy or cleanly, sick or 

 well, he cannot have mange until the living 

 or embryo acarus is by some means placed 

 upon his body. Just how the trouble is 

 communicated may not always be clear, but, 

 as it is well known that a dog can become 

 infected by contact with one that is suffer- 

 ing from the trouble, or by occupying a 



