292* Journal of Agriculture, Victoria. [10 May, 1918. 



One hundred and forty-nine grandsons show 26 per cent, unsound- 

 ness. Half of this is in 1.1, which is, without doubt, the most unsound 

 sub-family — showing 38.7 per cent, unsoundness in 124 descendants 

 recorded. 



A fact that must not be overlooked in considering these tables, and 

 "particularly with the progeny of this horse, is that a number of animals 

 reported sound were so at three years of age. There is no doubt what- 

 ever that many of these would prove unsound at more mature age. 

 Experience has shown that, in respect of all families, both sound and 

 unsound, up to 20 per cent, which are sound at three years are rejected 

 at four and five years. 



Of the 76 descendants of 1.1 which were sound, twenty-four were 

 three years old, or under, at examination. 



Sub-family 1.2 divides itself into two branches — 1.21 and 1.22, and 

 their progeny. The former shows a large proportion of unsoundness, 

 while the latter shows only one unsound, viz., 1.22145, and this horse was 

 from a mare by 3.108, a member not examined, but of the very unsound 

 family 3. Evidently this is another case of soundness being introduced 

 into the line, possibly through 1,221. 



Whilst the descendants of 1.3 are undoubtedly badly affected, show- 

 ing 23.5 per cent, unsound animals out of 132 examined, there is one line 

 of his descendants through 1.34223 which has lost the taint; out of 

 thirty of the sons of the latter examined, four only show unsoundness, 

 and on the dam's side their breeding is as under : — 



The dam of 1.342232 is by 38, sire of 38.2. 

 The dam of 1.342236 is by 38.2, badly unsound. 

 The dam of 1.34223001 is by 38.2, badly unsound. 

 The dam of 1.342230002 is by 1.6111, the granddam being by 38. 

 1.6111 was not examined; the limited number of his progeny, which 

 were 19 per cent., were found unsound. 



Thirty-eight was not examined, but it will be observed later that he 

 occurs very frequently on the dam's side of unsound horses. 



Another sub-family, which shows an endeavour to establish sound- 

 ness, is through 1.71 — 8, or 11.6 per cent., of his progeny were unsound; 

 but it can be shown that, in respect of the following, unsoundness was 

 carried in the dam's blood ; — 



The dam of 1.713 was by 2.103, not examined, probably sound. 

 The granddam was by 3, not examined, but the sire of a very unsound 



family. 

 The dam of 1.719 was by a son of 3. 

 The dam of 1.7107 was by 7.311009, probably sound; granddam 



(was by 9.51, not examined, but showing 28 per cent, unsoundness 



in his progeny. 

 The dam of 1.710021 was by a son of 3.1. 

 The dam of 1.71142 was by 29.112, a sire showing 35 per cent. 



unsoundness in his progeny. 



