10 May, 1910. 



Hcrcditarv Unsoinidiicss in Horses. 



ji'i 



of tables containing the actual names, together with the cipher kev. has 

 been furnished to tlie Melbourne University examiners, the Minister for 

 Agriculture, and the Editor of this Journal^) 



Table IX. — Unsound Families. 



FAMiT,y •• A." 

 -Sire .. .. Q of B (not evaniinecl). 



Aged 

 Aged 

 Aged 

 Aged 

 Aged 

 Aged 

 Aged 

 Aged 

 Aged 



6 years 

 6 years 

 5 years 

 5 years 

 5 years 

 4 years 

 4 years 

 4 years 

 4 years 

 4 years 

 4 years 

 3 years 

 3 years 

 3 years 

 3 years 



Sideboned (24). 



E 



U 



E 



(■ 



C 



z 



u 



T 



H — 



B — 



— Q of B 



Age. 



Aged 

 Aged 



Aged 

 Aged 

 Aged 

 5 years 

 5 years 

 3 years 

 3 years 

 3 years 

 3 years 

 3 years 

 3 years 

 3 years 

 3 years 



Sound (15) 



- N- 

 C - 



Q- 



B- 

 W- 



Remarkg. — 61 •5% of examined progeny sideboned ; 38 '5% sound. 



81 -8% sons sideboned ; 18-8% sound. 



53-5% grandsons sideboned; 46-5% sound. 

 Tlie influence of sound blood on the dam's side in the case of the grandsons may be presumed, each 



grandson only carrying one-quarter of " Q of B " blood against three-quarters outside lilood. 



This family is an instance of what has been obseryed throughout, yiz., that the influence of the foundation 

 sire, whether in the direction of soundne.ss or unsoundness, fessens with each generation, unless there is 

 introduction of sound or of unsound blood, as the case may be, on the dam's side in the younger genera- 

 tions. 



Eajiily " B" 

 ) (not examined). 



Aged 



Aged 



.\ged 



Aged 



Aged 



6 years 



5 years 



5 years 



6 years 

 4 years 

 4 years 

 3 years 

 3 years 

 3 years 

 3 years 



Sideboned (15) 



— I- 



M 



D 



N 



4 years 

 3 years 

 3 years 

 3 years 



Aged 

 5 years 

 4 years 

 4 years 

 3 years 

 3 years 



Sound (10). 



Q 



T 



q 



D 



D I- 



L 



of P 



■ n 



D 



Uemarks. — 60% of examined progeny sideboned ; 40% sound. 

 66 "7% sons sideboned ; 33 '3% sovind. 

 53 '7°^ grandsons sideboned; 46-3''o sound. 

 ■I(il3. M 



