14 MAINE AGRICULTURAL EXPERIMENT STATION. ig02. 



Effects of Temperature upon Eggs while being held for 



Incubation. 



From May 25th to June 2d all of the eggs laid by 24 hens 

 were saved and held 10 days, until June 12th before being incu- 

 bated. The eggs from each hen were divided into two lots by 

 selecting each alternate one as laid. One of the lots was placed 

 in a room with a temperature of 70 F. and the other lot was put 

 in another room where the temperature was 50 F. There was 

 about the same amount of moisture in each room, and both were 

 equally light. The eggs were in open boxes and were turned 

 each day. The temperatures were steadily maintained through 

 the 10 days, at the end of which time the eggs were all put 

 together into the same incubator where they were subject to like 

 conditions. 



The tables below show the behavior of the eggs from each 

 individual hen, under the same, and varied temperature, as well 

 as the results of the test. 



DATES ON WHICH EGGS WERE LAID AND RESULTS OF INCUBATION*. 



a * 



^ c 



5v 



C 



601.. 

 604.. 

 606.. 

 607.. 

 608.. 

 609.. 

 612.. 

 616.. 

 617.. 

 619.. 

 620.. 

 621.. 

 622.. 

 623.. 

 624.. 

 625.. 

 626.. 

 628. . 

 630.. 

 631.. 

 632.. 

 635.. 

 636.. 

 640... 



70°. 

 50°. 

 70°. 

 50°. 

 70°. 



7<V 

 50' 



50°. 



6°. 



50* 



0° 



Mi 



Inf.. 

 12... 

 12... 

 20... 

 12... 



12.. 

 20.. 



20... 

 C'k! 



12... 

 12... 

 20... 



0°. C'k, 



50°. Inf.. 70°. Inf. 



70°. C'k. 



|50°. C'k. 



70°. 20... 50°. C'k. 



50°. 20. 



70°. C'k 



50°. 12.. 



70°. C'k 



50°. C'k. 170°. 20 



70°. C'k, 



70°. C'k, 



50°. C'k, 



70°. 20... 



0°. 20...|50°. 12. 



50°. 20... 70°. 20. 



50°. 20. 



70°. 12. 



0°. 20... 

 50°. 12... 

 50°. C'k. 



50°. 12. 

 50°. 20. 



50°, 

 50°. 



Inf.. 

 C'k. 



C'k 

 20.. 



70°. 

 50°. 



12. . . 

 12... 



50°. 20. 



50° 

 70- 

 50° 

 70° 

 50* 



Inf 



12... 



30... 



C'k. 



12... 



70°. 

 70°. 

 70°. 

 70°. 

 70°. 



20... 

 C'k. 

 20... 

 12... 

 C'k. 



0°, 

 50°, 

 70°. 



C'k 

 12.. 

 12.. 



50°. 

 50°. 

 50°. 

 70°. 

 50°. 



C'k, 

 12.., 

 '20... 

 12... 

 20... 



70°. C'k, 



50°. 



0°. 



50°. 



70°. 



12.., 



C'k, 

 C'k, 

 12.., 



50°. 20.. 



5ir 



C'k. 



70°. 20. 



50° 

 70°, 



7ii° 



ro°. 12 



50°. 12 



12. 70°. 20 



C'k 



C'k 50°. C'k 



50°. 20 



2u. 



20. 



C'k 



0°. 



on'. 

 0°. 



0= 



0°, 



. 70° 



20. 60°. C'k 



C'k 70°. C'k 



Inf. 5U°. Inf. 



....70°. C'k 



.[50°. 20. 



.... 70°. li 



50°. 12.1 



50°. 20.; 



70°. C'k 50°. 12, 



50°. 20. .70° 

 50°. 20. .. 



50°. C'k 



C'k 

 12. 

 20. 

 C'k 

 C'k 

 C'k 



70°. C'k 

 50°. 20. 



50°. 20. 



70°. C'k 

 50°. 12. 



6°.' ' 12. 



50° 



I 



]■:. 



70°. 



70°. 

 50°. 

 50°. 

 70°. 

 70°. 

 70°. 



12. 

 (.'k 

 C'k 



20, 

 20. 

 20. 

 20. 



12. 

 Inf 



0°. 20. 



70°. 20. 

 50°. 12. 



12. 

 C'k 



70°. 12. 



The figures 50° mark the eggs that were kept at fifty degrees of temperature 

 anil the figures 70° indicate the eggs that were held at seventy degrees. 

 The other instructions are explained at foot of table on page 13. 



