HOW TO PREVENT DISEASE 



107 



chemical disinfectants, etc. ; the great disease-producing 

 and disease-spreading agency is germ contagion. ' 



We have the specific discussion of feeding principles 

 in another chapter. 

 It seems a very 

 simple proposition 

 to state that all 

 necessary exercise 

 may be provided 

 through the method 

 of administering the 

 feed, and furnish- 

 ing abundant litter. 

 But the litter prob- 

 lem, simple as it 

 looks, is a perennial 

 problem to poultry- 

 men, chiefly because 

 most materials tend 

 to mat together 

 when slightly moist 

 and trampled, so 

 that the grains fail 

 to become buried in 

 the Htter, and its 

 reason-to-be is thus 

 not justified. I find 

 that it helps one 

 toward correct prac- 

 tice to know the rea- 

 sons for ^ny suggested method. To be sure, the bene- 

 ficial result of exercise for any animal should not need 



A "Turn-stile" Automatic Grain Feeder, 

 ercise Makes for Health 



Ex- 



