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it is, the SUPPLY of heat must be regulated by 

 hand more or less, as the temperature of the room 

 changes. You must understand the working of 

 the regulator and see that it is set at the proper 

 degree before you put ANY EGGS in the ma- 

 chine." (No person would start to fire up a new 

 boiler without properly adjusting the safety valve, 

 nor would an engineer attempt to start his locomo- 

 tive before getting up steam to the required pressure. 

 A baker would not put his bread in an oven before 

 it was thoroughly heated. Certainly an incubator 

 manufacturer with common sense would not direct 

 you to put eggs into an incubator before you have 

 the heat up to lof and the regulator set to control 

 it. Such argument (?} is ridiculous}. The fore- 

 going leaves you to judge the real value of self- 

 regulators, which is materially the *same advice 

 given to all purchasers, after sending their cash for a 

 self- regulating incubator. (All so-called self -regu- 

 lating incubators are not self -regulating, but there 

 are some which are.) 



We most emphatically state that the 



is as near perfect in this respect as a machine for 

 hatching eggs can be made, unassisted by motive 

 power, thermostat, clock-work, electricity or any 

 secondary appliance whatever. (No motive power, 

 no automatic regulation; and where there is no 

 automatic regulation you must depend upon regu- 

 lating by hand, that is by turning the flame up or 

 down; if you are not at hand at the proper time, 

 which may be at midday or at midnight, you get left 

 on the hatch, your eggs get cooked or chilled?) Our 

 104 



