Hatching with Incubators 125 



leave them in the cases until a week or so before 

 they wish to begin hatching, only to find that some 

 part is hurt or lacking. It is rather late then to 

 write letters and get needed parts in time to start 

 promptly. 



Although an incubator is, after all, a very simple 

 instrument to handle, when we understand it, the 

 first experiments should not be carried out hastily. 

 If you get yours set up along in January, test each 

 part and nm it a few days at the required heat. 

 You can then leave it till hatching time with the 

 assurance that everything will be ready and in 

 order. If you put this off till the season opens 

 you may join those who make a mess of the first 

 trial through haste and lack of preparation. 



Location of the Incubator.' — The successful 

 operation of the incubator will depend to a certain 

 extent upon its location. It is clear that in a room 

 which has a temperature of seventy degrees at 

 noon and forty degrees at night the problem of 

 keeping the heat within the hatching chamber at 

 the same point all the time will be difficult. 



In general we can figure that, however good the 

 construction may be, the temperature in the egg 

 chamber will fall one degree if the outside tem- 



