124 Maine: agriculturai. experime;nt station. 1909. 



TABLE VIII. 



Percentage of Infertile Eggs Produced by Bach 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 eg?3 for each feinale. 

 (Band numbers are in brackets; percentages unbracketed.) 



■5s.a5 8 



2 



E 



551 



3 



E 



552 



4 



E 



553 



5 



E 



554 



6 



E 



555 





E 



556 



11 



D* 



56 



(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, (250)15,(251)12, 

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



16.7 



12.0 



(17)2, (92)36. (94U5, (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 ! 



(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 



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

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



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

 (1074)47, (?075)47, (1076)0, (1078)87, (1079)5, (1080)31, 

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



12 D 



13 D 58 



14 D 31 



(1005)2, (1046)0, (1047)5, (1050)63, (1051)20, (1053)9, (1056)2, 

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

 (1068)0 



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

 (1033)0, (1038)7, (1039)6, (1040)0, (1041)4, (1043)0, (1044)3, 

 (1045)4, (E 427)0 i 



(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 ] 



9.0 



17.2 



6.9 



29.8 



12.0 



3.9 



From these tables the following points are to be noted : 

 I. There is clearly a very great difference among different 

 pullets in their abilit}^ to produce fertile eggs. The extent of 

 such differences may be grasped by a detailed examination of 

 the tables. Some examples 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. 18) 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). 



