11 Nov., 1918.] Hereditary Unsoundness in Horses. 



68b 



from the fact that five aged sons of 7.41 were examined and found sound, 

 and two were unsound. One of these, 7.4101, was from a mare by 9.3, 

 of unsound family; the other cannot be traced. Of the grandsons of 7.41, 

 7.4147 was from a mare by 1.15, of unsound blood; the sound ones 

 were all of mature age. 



Three sons of 7.42 were seen, and all were unsound. This unsound- 

 ness could not have originated from 7.4, for a study of the age of his 

 descendants shows that 38 were sound at 5 years of age or over. It 

 may have been introduced through 7.42 himself, whose dam's pedigree 

 cannot be traced. It is more likely to have come from the dam's side of 

 the three sons, for two of them, 7.421 and 7.423, can be shown to be by 

 the same horse, a son of 3.2, of very unsound blood. 



It is thus seen that there is every support to the opening statement 

 that the family, considered from the sire's side, may be regarded as 

 sound, and that the unsoundness present has been introduced from outside 

 tainted sources. 



•1, not 

 examined 



7-11, not 

 examined 



7 -12, not 

 examined 



7-13 not 

 examined 



7 • 111, not examined 



7 • 121 , not examined 



I*'- 



V 



7-131, not examined 



FAMILY 7. 



■1111, sound, 3 

 1112, sound, 4 

 1211, not ex- 

 amined- 

 7 -1212, sound, 3 

 7-1213, sound, 3 

 7-1214, sound, 3 

 7-1215, sound, 5 

 7-1216, sound, 4 

 7-1217, sound, 5 



7-1218, sound, 5 — 



7-1219, sound, 4 

 7-12101, sound, 4 

 7-12103, sound, 5 



7-12105,sound, 5— 



7-12106, sound, 5 

 7-12107, sound, 5 

 7-12109, sound, 3 

 7-121001, sound, 5 

 7-121002, sound, 3 

 7-121003, not ex- 

 amined — 



7 -121004, sound, 3 

 7 -121000, sound, 3 

 7 -121007, sound, 3 

 7-12104, sound 

 B.A.P , 4 

 7-12102. sidebone,3 

 7,12108, sidebone, 3 

 7-121006, sidebone, 

 5 



7-1311, sound, 8— 



7-1312, not ex 

 amined — 



7-1313, not ex- 

 amined — 



7'1314, not ex- 

 amined — 



712111, sidebone, 4 



r7-12181, sound, 4 

 <! 7-12183, sound, 5 

 1.7-12182, sidebone,5 



7-121051, sound, 3 



7,-121052, sound 



D.A.P.,3 



7 -1210032, sound, 4 

 7-12]0033,sound,3 

 7 -1210034, sound, 3 

 7 -1210035, sound, 6 

 7 -1210036, sound, 5 

 7-1210031, sound 

 D.A.P.,3 



7-13111, 



7-13112, 



713113, 



7-13114, 



L7-13115, 



f 7-13121, 



; 7-13122, 



I 7-13123, 



I 7-13124, 



1 7-13125, 



(7-13126, 



sound, 4 

 sound, 3 

 sound, 3 

 sound, 3 

 sound, 5 

 sound 5 

 sound, 3 

 sound, 3 

 sound, 3 

 sound, 4 

 sound, 3 



-7-13131, sound, 4 

 -7-13141, sound, 4 



{'•■ 



121111, sound, 3 

 121112, sound 



D.A.P., 3 



7-131311, sound, 3 

 .7-131312, sound, 4 



