responded ; some of them sent cuts, but only one 

 sent directions for operating. We give these facts 

 as an answer to those who may wish to know why 

 we have not described all incubators, as well as a 

 few. Without directions for operating, the simple 

 picture of the exterior of a machine, is no more 

 than you can see in the advertisements in poultry 

 papers and in the catalogues of the manufacturers. 



80 



