454 



Journal of Agriculture 



[lo July, 1909. 



past year, further evidence in the same direction has been forthcoming in 

 respect of these same families and also in respect of at least one other 

 family. 



The descendants examined include, in some cases, G.G.G. Grandsons 

 ■of the original sire and there is a considerable diminution in the number 

 of unsound descendants the further away the animal is from the original 

 source. This in many cases is doubtless l)ecause of the influence of the 

 introduction of sound blood on the dam's side. 



TRONT AND BACK VIEWS OF HOCKS BADLY AFFECTED WITH BONE SPAVIN 



ONE LIMB ALSO SHOWING SPLINT. 



On the (rther hand, three families at least can be cited in which the 

 preponderance of sound descendants is cquallv conxincing of hereditary 

 transmission of an invulnerability to (K-\fl(i|)iiirnl of unsoundness. In 

 one case, eleven sons of a comparatively \oung sire ha\-e been examined 

 and only one rejected (for sidelx>nes). This one's dam traced to one of 

 the above " un.sound " families, so that the source of the " taint " in his 

 case is obvious. 



Future Developmfnts. 



At the 1908 Conference of the Chamber of Agriculture ai Geeloiig. 

 ir was resolved by the unanimo'us vote of th<- whtilr of the delegates that 

 it was desirable that legislation should be ini induced limiting sires stand- 

 ing for public use to those in respect of which a Government certificate 



