would not be apt to repeat the performance (or 

 non-performance) with either of the other two 

 incubators. * 



HOT AIR OR HOT WATER 2 



A question which is sure to confront the beginner 

 (and the old poultryman who determines to use 

 the incubator instead of hens) is : Which is prefer- 

 able, a hot air or hot water incubator? 



No one can answer that question better than 

 yourself, if you will just look into it, and make 

 good use of your natural intelligence. Hear 

 argument on both sides, but examine the evidence, 

 look at the apparatus, there is nothing hidden, 

 mysterious, or complicated about it. The prin- 

 ciples are as simple as addition and subtraction. 

 You do not have to ask a professor of mathematics 

 whether or not two and two make four, or which 

 is the greater number, one or two ? Neither will 

 you have to depend upon any man's advice in this 

 matter, if you have ordinary intelligence and the 

 self confidence which every man must have to 

 succeed in the poultry (or any other) business. 



The reason that so many intelligent persons go 

 wrong in this matter is that they do not stop to 

 think. 



There is so much nonsense written and pub- 

 lished, that the man who will not do his own think- 

 ing and reasoning will almost certainly get bewild- 

 ered. For instance a writer in a prominent poultry 



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