can keep an even temperature in the room, you 

 may be able to control a hot water incubator with 

 two regulators ; but in that case why not hatch in 

 the room without an incubator ? 



HOCUS POCUS REGULATORS. 



The old game of "hocus pocus," or, "now ycu 

 see it, and now you don't," may serve very nicely 

 as an innocent amusement for children, but when 

 applied to the regulator of an incubator, is not 

 particularly amusing to the operator of such incu- 

 bator. The following review of a regulator farce 

 in four acts running through four editions of an 

 incubator catalogue (our observations being 

 inserted in italics}, is to the point. 



HOCUS POCUS; 



OR THE MAGIC REGULATOR. 



FIRST ACT (from Catalogue No. 5). 

 "OUR REGULATOR." To control the heat 

 through a course of hatching at a temperature of 

 103 within the egg chamber, has been the perplex- 

 ing question with all incubator manufacturers. 

 Methods consisting of electricity, mercury, water 

 expansion, thermostat, lamp trips and other devices 

 we have personally and practically tested, which 

 enables us to know from experience the great 

 advantage of an incubator with a large water capa- 

 city, to produce the amount of heat necessary with- 



100 



