regulator which is simple, perfect and absolutely 

 reliable, ( The machine as described has no more 

 regulator than an ordinary tea kettle has, and on 

 the following page of same catalogue they not only 

 admit that they have no automatic regulator, but 

 you will see them say that there is no absolutely self- 

 regulating incubator. Nothing slow about this 

 farce /), and one that produces a gradual and even 

 ventilation, and avoids all chilly drafts which occur 

 in incubators ventilated by the constant opening 

 and closing of large swinging dampers, claimed to 

 regulate the heat, and placed immediately over the 

 egg drawer. We have fully demonstrated the 

 good qualities of our hatcher, and the reliability 

 of our regulator to the people in this whole section 

 by completing two hatches in succession, in one of 

 the largest and most extensively decorated show 



windows in the city of , with good success. 



Would respectfully ask : Could we, in any way 



better explain what the will do? or the 



accuracy of our regulator. {Have you, thus far, 

 found any explanation as to HO W this ' regulator* 

 regulates ? How it manages the big body of water 

 when it gets too hot and sends the temperature of the 

 egg chamber up to IIO Q , as we have seen it ; or 

 how it warms it up again when it gets too cool f 

 No f Well neither have we ; but we can tell you 

 how its manufacturers did it at the World 's Fair : 

 They turned the light up or down and waited 

 several hours, or got others to do it for them. Had 

 the four ventilators at the corners exhausted the 

 heat at 103, there would have been no danger of 

 102 



