card the yellow (which we called red) and replace 

 it with red if we wished to produce purple by mix- 

 ing with blue. And so would the maker of the 

 good incubator have to tell his correspondent to 

 hunt up a lot of fresh eggs from a place where the 

 breeding stock is healthy, vigorous and mated with 

 good proportion of males. 



Other parties who have really first-class hatch- 

 able eggs, imagine that they can improve on the 

 directions which are sent with the incubator (not 

 having given those directions one fair trial) and 

 will run the machine to suit themselves, and when 

 they kill a lot of chicks in the shell, condemn 

 either the eggs or the incubator. If they write for 

 advise, they tell the truth about the eggs, but omit 

 to mention the fact that they paid no attention to 

 directions. Some of them, we regret to say, will 

 even assert that they did follow the directions. 



These persons are as foolish as the man who, 

 suffering with cholera morbus, would tell the 

 physician that he had toothache. 



PERIODS OF INCUBATION. 



Chickens, twenty-one days ; ducks, twenty-eight 

 days ; geese, thirty days ; turkeys, twenty- eight 

 days ; Guinea fowls, twenty-five days ; pea fowls, 

 twenty-eight days ; pheasants, twenty- five days ; 

 partridges, twenty-four days ; ostriches, forty to 

 forty- two days. 



In connection with the above table we should 

 remember that a strictly fresh laid egg will hatch 



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