82 CHARLES R. STOCKARD 



made between the Fj hybrids and both parent stocks. We 

 shall consider first the findings in breeding back to the Saluki. 

 An F! bassethound-Saluki, 506 $ , was mated to a pure Saluki 

 bitch, 833, and a litter of six puppies was whelped. This litter 

 is shown in plate 14 (figs. 49). Figure 2 of the same plate 

 shows the pure Saluki mother, and the F! represented (fig. 3) 

 is a brother of the sire. The six backcross animals were 

 adults when photographed. Two of these are tall, slender, 

 Saluki-like males: figure 4 is short haired like the basset- 

 hound and figure 9 is Saluki-coated, and might easily be 

 mistaken for a pure bred Saluki. The other four members of 

 this litter have the intermediate leg condition of the Fj father. 

 If only one of the dogs with intermediate legs had had long- 

 legs instead, this litter would show the correct 50 :50 expecta- 

 tion. The recessive Saluki coat with the fringe on legs and 

 tail and long hair about the ears appears exactly according 

 to expectation, as is shown by figures 7, 8 and 9. The six 

 animals all possess slender, Saluki typed bone, as should be 

 the case if this type of bone dominates the heavier foxhound- 

 like bone of the bassethound, which it does. Two members 

 of this litter were bred to further follow the expression of 

 bone type and leg length. The long legged male, 1012, 

 (fig. 4, pi. 14; fig. 1, pi. 15) was mated to his sister, 1016, 

 with legs of intermediate length (fig. 5, pi. 14; fig. 2, pi. 15). 

 This mating whelped four female puppies, which are seen 

 in plate 15 (figs. 3 and 4). Two of these have long, slender legs 

 and the other two have slender, intermediately long legs with 



PLATE 14 



EXPLANATION OF FIGURES 



Backcross of the F, bassethound-Saluki with the pure Saluki to further test 

 the genetic reaction of achondroplasia in the leg bones as well as the apparent 

 dominance of Saluki bone constitution. 



1 Bassethound 216$. 



2 Saluki 833$. 



3 F, 504 <?. 



4-9 One litter of six backcross Saluki hybrids. 



4 1012 <?. 6 1013 (j 1 . 8 1015$. 



5 1016$. 7 1017$. -9 1014^. 



