tiring the reader. Try them yourself. The ordi- 

 nary moisture gauges are not reliable, and if they 

 were, you could not control the outside humidity. 



From one-sixth to eighteen-twenty-firsts of the 

 incubation there is no water in the egg chamber of 

 a majority of incubators, to create moisture. 

 Suppose then the gauge indicates more moisture 

 than is called for, what will you do ? What use is 

 the gauge there? If the gauge is not correct you 

 will know no more than without one. If the water 

 pans were full and the gauge indicated too much 

 moisture, and you reduced it, you would probably 

 do exactly wrong ; for the gauge would fool you . 

 There is no rule by which a given amount of 

 moisture can be used through an entire hatch, or 

 for a part of it, by any gauge. A correct gauge 

 will indicate the degree of humidity, but thus far, 

 it has never been perfectly controlled in an incu- 

 bator, nor is it likely to be as long as ventilation is 

 a necessity. We can regulate it to a great extent 

 so as to make very good hatches ; but the man 

 who expects to control the moisture in the egg 

 chamber must look beyond a moisture gauge. 



There is more moisture when the chicks are 

 hatching than at any other time ; they also need 

 more then. The tray of wet chicks increases the 

 moisture. 



Some eggs require more moisture than others. 

 Some eggs will stand more moisture than others. 

 Thick shell eggs require less than those with thin, 

 soft shells. You will often hear a person say that 

 their thin shell eggs hatched splendidly, but that 



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