124 MAINE AGRICULTURAL EXPERIMENT STATION. I909'. 



TABLE VIII. 



Percentage of Infertile Eggs Produced by Each of the Barred 

 Plymouth Rock Pullets and Yearling Hens Making Complete 

 Records in the Hatching Season of ipop. Arranged Accord- 

 ing to Pens and Cockerels. 



Band number and per cent, of infertile eggs for each female. 

 (Band numbere are in brackets; percentages unbracketed.) 





•5S.9£S 



(125)3, (184)31, (212)2, (255)22, (287)4, (304)12, (296)0, (327)1,! 

 (343)93, (350)3, (354)2, (361)30, (415)0, (419)32 



(201)0, (204)0, (229)3, (231)2, (238)25, (241)8, (2.-iO) 15,(251) 12, 

 (270)10, (272)3, (280)4, (293)63, (295)6, (310)17 



16. 



12.0 



(17)2,(92)36.(94)15,(186)21,(221)0, (239)6, (248>32, (258)0 



(303)0, (334)34, (382)21, (388)2, (406)14, (449)3 ' 13.2 



(3)0, (18)3, (160)44, (208)0, (224)4, (226)2, (228)3, (237)3, 



(266)2, (278)10, (324)8, (333)8, (352)12, (405)27 9.0 



(74)5, (114)25, (155)0, (183)17. (202)2, (209)0, (232)20, (249)0, 



(302)0, (323)97, (325)0, (326)2, (377)2, (403)71 ; 17.2 



(206)0, (207)5, (215)18, (225)14, (235)0, (257)20, (263)0,(276)4, 



(294)3, (385)12, (420)0, (422)7 6.9 



(1063)0, (1069)4, (1070)12, (1071)100. (1072)28, (1073)0, 

 (1074)47, (1075)47, (1076)0, (1078)87, (1079)5, (1080)31, 

 (1081)2, (1082)0, (1083)85 29.8 



(1005)2, (1046)0. (1047)5, (10.50)63, (1051)20. (1053)9, (1056)2, 

 (1057)7, (1058)32, (1060)5, (1062)24, (1065)0, (1067)0, 

 (1068)0 i 12.0 



(1003)0, (1024)0, (1026)27, (1027)0. (1028)2, (1030)0, (1032)10, 

 (10.33)0, (1038)7, (10.39)6, (1040)0, (1041)4, (1043)0, (1044)3, 

 (1045)4, (E 427)0 3.9 



(E 220)0, (1001)5, (1006)0, (1008)0, (1009)18, (1010)4, (1013)0, 



(1014)10, (1016)0, (1017)5, (1019)0, (1022)0, (1023)40 6.3 



From these tables the following points are to be noted : 

 I. There is clearly a very great difference among different 

 pullets in their ability to produce fertile eggs. The extent of 

 such differences may be grasped by a detailed examination of 

 the tables. Some exatnples on this point may be cited, taking 

 Table VII first. In pen 9, one bird (No. 414) had only 7 per 

 cent, of her eggs infertile. In the same pen, and hence with the 

 same cockerel, another pullet (No. i8) had 48 per cent of her 



* Males having band numbers prefixed by the letter D are cock birds, 

 and those with the letter E are cockerels. Females having band num- 

 bers above 1000 are hens (hatched in 1907), all other females are pul- 

 lets, (1908 hatch). 



