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INCUBATION 

 INCUBATORS 



An incubator is an apparatus by means of which eggs 

 may be artificially kept at the proper temperature for 

 hatching. Many different styles and sizes of incubators 

 are now in use, some of them being adapted for all sizes 

 of eggs from those of the bantam to those of an ostrich. 

 Incubators range in size from those the capacity of 

 which is limited to a few dozen eggs to those that are 



FIG. 5 



capable of incubating many thousand eggs. The ma- 

 chines most commonly used have capacities that range 

 from 5 to 30 doz. hen's eggs or a smaller number of any 

 eggs that are larger than hen's eggs. 



Though many different types of incubators are made, 

 \vith but few exceptions in outward appearance they 

 resemble the one shown in Fig. 5. 



The essential parts of an incubator consist of a heating 

 apparatus that is controlled by a regulator, and an egg 





