INCUBATION 



417 



the chicks to run in this netting covered run during the day. 

 At night a frame covered with J^ inch sand screen is placed 

 tightly against the front of the open coop to keep out the 

 rats and other nocturnal enemies. 



THE SMALL INCUBATOR 



In hatching eggs with an incubator the first cost — that is, the 

 cost of the machine — ^is between ten and fifteen cents per egg 

 capacity. A machine holding 100 eggs should not cost more 

 than ten dollars. 



BEADED TOP 

 ASBE"STOS 

 RED CEDAR 



PEGULATOR CASTING 

 DAMPER BAR 

 DAMPER 

 FILLING TUBE 



Fig. 153.— a 



HEATER JACKET 

 END CASTING 

 CONNECTING POD 

 ADJUSTMENT NUT 



REGULATOR BAB 



am showing the parts o£ a small incubator. 

 Inc. Co.) 



(St. Helns. 



The cost of operating a 100-egg incubator twenty-one days, 

 using kerosene at twelve cents per gallon, will be about twenty- 

 five cents, or, in other words, it will require about 2 gallons. 



It costs from ten to fifteen cents a month to feed a hen. The 

 cost of feeding six hens, which would equal in capacity the 100- 

 egg incubator three weeks, will be about fifty cents. 



The labor of caring for an incubator is no more than caring 

 for the six hens. 



27 



