chicks and sixty per cent, dead in the shell, in his 

 incubator, into which he placed all the eggs he 

 bought, when he writes to the maker of the 

 machine as follows: "My hatch was forty per 

 cent, of sickly looking chicks, and the balance of 

 the eggs had dead chicks in them some seeming 

 to have died on the tenth day and others at various 

 stages of development, many being full grown and 

 just ready to hatch. I cannot understand it, as the 

 same eggs placed under hens hatched ninety- eight 

 per cent. I followed your directions to the 

 letter." 



Now if the manufacturer knows from years of 

 severe test that his machine will always hatch a 

 good per cent, of halchable eggs, every time, when 

 operated by his directions, he also knows to a cer- 

 tainty that his correspondent either failed to oper- 

 ate the machine as directed, or that his statement 

 about hatching some of the same lot of eggs under 

 hens is false. He knows it as certainly as the 

 painter would know that we were speaking falsely 

 if we told him that by mixing equal proportions of 

 red and blue we produced green. Suppose we 

 did write such a statement to a painter, and asked 

 his advice, assuring him that our neighbor had 

 used the same colors and produced purple. Would 

 he not know beyond a possibility of a doubt that 

 either we were color blind, or liars, or fools, or that 

 we thought him a fool when we presumed that he 

 would not know any better than to believe the 

 statement. 



All the advice he could give us would be to dis- 

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