190 Profitable Poultry Keeping. 



air warmed by contact with two metallic lamp flues giving 

 the desired warmth to the eggs. The air thus warmed is dif- 

 fused in the upper part of the machine, where it comes in 

 contact with pans of water, absorbing as much as it needs ; 

 then it is forced downward, maintaining a nearly uniformly 

 descending flow past and through the egg trays, and passes 

 out at the bottom of the machine through the Nursery, where 

 it passes off by a flue and chimney at the rear. The regula- 

 tion of the heat is accomplished by a thermostatic bar, which, 

 operating a simple clock-work, opens or closes the lamp flues, 

 thus increasing or diminishing the heat of the current of air, 

 which is constantly passing through the machine. None of 

 the products of combustion enter the egg chamber. 



The eggs are held in bottomless trays either upon rods or 

 upon wooden rollers. The rollers are connected by- rubber 

 bands so that they all turn together one way or the other, and 

 thus when one is turned all turn, and the eggs lying upon 

 them turn, and may thus all be turned over at one operation. 

 When trays with rods are used, one-third more eggs may be 

 held in the same space. Both rollers and rods are set so far 

 apart that while they hold eggs of all sizes they allow the 

 chicks to fall through into the Nursery, the floor of which is 

 four inches below the egg trays. The regulation of the tem- 

 perature is by its alternate rise and fall, but, as this is very 

 gradual and may have a very small range, it does not appear 

 to be objectionable. 



The Thermostatic is a comparatively new incubator, yet is 

 well received by practical men, and has done very good work. 



There is a very simple class of incubators with which per- 

 sons whose employment, or lack of other employment, is such 

 that they can give them frequent attention, may successfully 

 hatch many chickens. Of this class is 



THE "NOVELTY" INCUBATOR.* 



This may stand for its class, which is peculiar in having no 

 automatic regulating appar atus. This machine consists of 



* Made by A. G. Atkins, Orange, N.' J. 



