999 QUESTIONS AND ANSWERS 85 



QUESTION Can an incubator be made to maintain a temper- 

 ature for days at a time that will not vary more than one-half de- 

 gree either way from the desired amount ? 



ANSWER Yes. A perfect regulator on a good machine in the 

 hands of an expert operator can be made to keep the temperature 

 at any given point during the entire hatch, but cases of this kind 

 are exceedingly rare. 



QUESTION Could an incubator be considered a good one if the 

 temperature could be controlled within a range of i l / 2 degrees dur- 

 ing the hatch ? 



ANSWER Yes. 



QUESTION Can the temperature in the incubator go as low 

 as 101 and as high as 105 and a good hatch still secured ? 



ANSWER Yes, if the extremes are not held too long at a time, 

 say more than 24 hours. 



QUESTION Are the very small incubators as reliable as those 

 of larger capacity ? 

 ANSWER Yes. 



QUESTION At what temperature" should the incubator room 

 or cellar be kept ? 



ANSWER The object should be to maintain as even a temper- 

 ature as possible somewhere within a maximum of 70 degrees and a 

 minimum of 60 degrees, which are the safest limits. 



QUESTION What is the greatest heat the egg can stand in the 

 incubator without the germ being killed? 



ANSWER 1 A fixed degree that will apply in all cases cannot 

 be stated; 109 degrees before the eleventh day and 112 degrees after 

 that period. 



QUESTION How often should the eggs be turned in the incu- 

 bator ? 



ANSWER Up to the igth day turn them at least once a day. 

 Twice a day will generally be advantageous. 



QUESTION How large should the air cell in the end of the egg 

 be on the 5th, the loth and I5th days of incubation? 



ANSWER In the average-sized egg, about the size of a 25-cent 

 piece on the fifth, nearly as large as a half dollar on the tenth and 

 a trifle larger than a half dollar on the fifteenth, or about seven- 

 eighths of an inch, one and one-eighth inches and one and one-quar- 

 ter inches. 



