132 INHERITANCE, FERTILITY, AM) SKX IN PIGEONS. 



' 'This is a ca.se where white came in as a result of weakness, due probably to age and 

 possibly to tuberculosis, one joint of the leg being somewhat affected. The extra tail 

 feathers do not represent so many independent elements given by the male, but rather 

 an excess of energy of development manifested at the same region as in the male parent. The 

 sire had 19 tail feathers." (SS 3) 



TABLE 108. 



t? C. ill.vrk'H (Arl). 



9 St. risoria (1)1); 7/1/95; escaped 10/25/97. 



A 1. 2/18/97; hatched, dead 1 day (cold). E 1. 5/11 ; probably no development. 



A 2. 2/20/97; developed; broken. E 2. 5/13; probably no development. 



B 1. 3/14; no development. F 1. G/6; no development. 



B 2. 3/16; some development. F 2. 6/8; no development. 



C. 4/6; no development. G 1. 6/26; no development. 



G 2. 6/28; no development. 



D. 4/29; probably no development. 



J 1. 8/29; no development. 

 HI. 7/12; no development. I0 o/oi 



, -'/-. J 2. 8/31; no development. 



H 2. 7/14; no development. 



K. 10/23; probably no development. 

 I 1. 8/2; hatched; dead 3?, days. 



I 2. 8/4; pricked shell; failed. (C 7/28) 



9 St. risoria (GF 1) given about Nov. 1897. Six eggs were produced 12/10/97 to 1/18/98; all proving 

 infertile. This was apparently a "weak" bird, since the records (C 7/20) show she was killed on 

 1/27/98. EDITOR. 



On 1/21/98 another 9 risoria (D 2) given, with following result: 



A 1. l/28/98\one developed, failed; other probably no G 1. 7/18; no development. 



A 2. 1/30/98J development. G 2. 7/20; no development. 



B 1. 2/19; pricked shell, failed. H 1. 8/12; no development. 



B 2. 2/21; no development. H 2. 8/14; no development. 



C 1. 3/16; no development. I 1. 8/24; no development. 



C 2. 3/18; no development. I 2. 8/26; no development. 



D 1. 4/14; developed 8 to 10 days. J 1. 9/14; no development. 



D 2. 4/16; no development. J 2. 9/16; no development. 



E 1. 5/12; hatched; dead at 11 days. K 1. 10/5; no development. 



E 2. 5/14; no development. K 2. 10/7; no development. 



cTF. 6/11; hatched. (C 7/28) 



9 St. alba (W 2) given 10/16/98; between this date and December 4, 1899, 6 eggs were produced and 



all tested absolutely infertile. 

 9 risoria X alba hybrid was substituted early in 1899, and produced 4 infertile eggs with this male. 



TABLE 109. 

 cf C. iHyrica (Arl) [before with risoria (D 1. GF 1. D 2); alba (W 2); and ris.-alba hyb.] 



9 C. gyrans; black parlor tumbler. 



A 1. 7/28/99; hatched. F 1. 2/28; hatched; soon died. 



A 2. 7/30/99; hatched. F 2. 3/2; hatched; soon died. 



B 1. 9/13; not tested. G 1. 3/31; did not hatch. 



B 2. 9/15; not tested. G 2. 4/2; hatched. 



C 1. 10/8; hatched, died 8 to 10 days. II 1. 6/7; not tested. 



C 2. 10/10; pricked shell, failed. H 2. 6/9; not tested. 



D 1. 11/22; hatched; soon died. I 1. 7/9; probably not tested. 



D 2. 11/24; hatched; soon died. I 2. 7/11; probably not tested. 



E 1. 1/17; no record. J 1. 8/19; hatehed. 



E 2. 1/19; no rerun!. J 2. 8/21; probably hatched. (C 7/28 



Tumbler x ring. The very distantly related tumbler pigeon (C. gyrans) and the blond 

 ring-dove yield only male offspring (table 112). With a female risoria x alba hybrid the 

 result was the same, as will be seen in table 114. It will be noted that the amount of absolute 

 infertility in both cases is very great. The distribution of this infertility is of interest in 

 reflecting the influence of "overwork" and lateness of season. The greater developmental 

 power of the first eggs of clutches (except the very first of the season), as compared with the 



