SYNDACTYLISM. 31 



Table 23. Ancestry of syndactyl fowl and the resvlts of variova matings involving syndactylism Continued. 



Serial 

 No. 



30 



30a 



31 



32 



32a 



33 



33a 



34 



34a 



35 



36 



36a 



37 



37o 



38 



38a 



39 



390 



40 



40a 



41 



41a 



42 



43 



44 

 45 

 46 

 47 

 48 

 49' 

 SO 

 51 



52 



52a 



53 



54 

 54a 



Pen 

 No. 



Mother. 



No. 



801 



801 



801 



801 



801 



801 



801 



801 



801 ' 



801 



801 



801 



801 



801 



801 



801 



801 



801 



801 



801 



801 



801 



801 



4569 

 4569 

 6843 

 872 

 872 

 5515 

 5515 

 7528 

 7528 

 6861 

 6869 

 6869 

 2831 

 2831 

 2526 

 2526 

 4570 

 4570 

 1892 

 1892 

 4263 

 4263 

 6872 



Bred 



in pen 



No. 



Toes. 



767 

 767 

 767 

 627 

 627 

 767 

 767 

 767 

 767 

 707 

 767 

 767 

 658 

 658 

 658 

 658 

 767 

 767 

 658 

 658 

 767 

 767 

 767 



Aba 



Aba 



Norma! , 



Ab^ 



Ab? 



Bba 



Bba 



A6/3 



Ab?..... 



Normal 



...Do.. 



...Do.. 



...Do.. 



...Do.. 



...Do.. 



...Do.. 



...Do.. 



...Do.. 



...Do.., 



...Do.., 



...Do.., 



...Do.., 



...Do.., 



Father. 



No. 



Bred 



in pen 



No. 



5399 

 4562 

 4562 

 5399 

 4562 

 5399 

 4562 

 5399 

 4562 

 4562 

 5399 

 4562 

 5399 

 4362 

 5399 

 4562 

 5399 

 4562 

 5399 

 4562 

 5399 

 4562 

 4562 



747 

 767 

 767 

 747 

 767 

 747 

 767 

 747 

 767 

 767 

 747 

 767 

 747 

 767 

 747 

 767 

 747 

 767 

 747 

 767 

 747 

 767 

 767 



Toes. 



Aba.... 

 Normal 

 ...Do.. 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 Aba.... 

 Normal . 

 ...Do... 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 Aba.... 

 Normal 

 ...Do.. 



Syndactyl (5399 (?). 

 Syndactyl (4562 cf). 



816 j 121 



816 1 121 



816 5835 



816 2353 



816 I 2353 



D.Br. ' Aba... 



D.Br. Aba 4912 



D.Br. Normal. 122 



D.Br. !...Do...j 122 



D. Br. !...Do...i 4912 



Normal 



..Do.. 



..Do... 



..Do 



..Do 



..Do... 



..Do.. 



..Do.. 



..Do.. 



122 D.Br. I Normal. 

 IIXP I... Do.. 

 D.Br. ...Do.. 

 D.Br. !...Do... 

 MXP I. ..Do 



Syndactyl (122 J).. 

 Syndactyl (4912d') . 



Offspring. 



Syndactyl. 



2f. If. Of. P.ct, 



100 



Classification. 



Ada. Aba. Abfi. Abp'. Bbi 



100.0 

 50.0 

 66.7 

 59.3 

 40.0 

 36.4 

 37.5 

 100.0 

 30.0 

 25.0 

 25.0 

 20.0 

 18.2 

 21.4 



0.0 

 33.3 

 16.7 

 10.5 



0.0 

 25.0 

 20.0 



0.0 



0.0 



32.6 

 25.7 



25.0 



10.0 



8.3 



0.0 

 0.0 

 0.0 

 0.0 



5.7 



3 



1 

 2 

 11 

 4 

 6 

 1 



ally great extension of the web in her feet was noticed. The syndactyl 

 condition of my birds did not, thus, arise de novo, but had its origin ante- 

 cedent to the beginning of the breeding experiments. In addition to this 

 main strain a slight degree of syndactylism has appeared among some of 

 my Cochin bantams. 



The types of syndactyhsm which have appeared in my flock form a 

 rather extensive series. First, (A) the single web, which, in my specimens, 

 always occupies the interspace between digits iii and iv. This is the same 

 interval which is most apt to show the web in syndactylism of the human 

 hand, and, it is suggestive to note, it is this interval that is filled in those 

 wading birds that have the single web only between the toes (e. g., Cursorius, 



