80 CHARLES R. STOCKARD 



The segregation of bone constitution and type is also shown 

 among the recessive long legged F 2 s. Some of these have the 

 long slender greyhound-like legs of the Saluki while others 

 have heavier and somewhat shorter legs resembling those of 

 the foxhound and the setter. The latter animals have in- 

 herited, we assume, the bassethound bone type, free or segre- 

 gated away from the factors for chondrodystrophy. 



Plate 13 illustrates still other bassethound-Saluki F 2 hy- 

 brids. Figures 1 to 5 show five adults from a litter of six; 

 three are long legged, one was judged to be pure for short, 

 and the other intermediate, si. Nos. 932 $ and 933 9 (figs. 4 

 and 5) are strongly Saluki in bone type. One of the tall dogs 

 (fig. 2) tends toward hound bone type and the other two (figs. 

 1 and 3) have rather definite Saluki bone type. In the lower 

 group in this plate, 817 $ and 816 S (figs. 7 and 9) are mem- 

 bers of a litter of eight. The two long legged dogs (figs. 6 

 and 7) are both of Saluki type, the two short (figs. 11 and 

 12) are pure for short but with Saluki typed bone, and the 

 three intermediates (figs. 8, 9 and 10) are mixed, si, for leg 

 length but with Saluki bone. 



The Saluki constitution, as indicated in the F x hybrids, is 

 hugely dominant, and the F 2 generation shows the character- 

 istics of the Saluki segregating and reappearing in very 

 definite form in a large majority of the individuals. It is 

 aside from our present problem to consider in detail the 

 inheritance of many of these features, since only a few of 

 them have been suspected of an association with endocrine 

 types of diseases. The strange, obliquely placed almond 

 shaped eye openings of the Saluki would seem to be a single 

 factor dominant character and is very prevalent among the 

 F L , dogs, as the illustrations show\ Types of coat and color 

 pattern and several characteristic attitudes and postures 

 among these hybrids are available for investigation, but are 

 to be reported in other places. 



On hybridizing widely contrasted types, such as the basset- 

 hound and Saluki, we have occasionally obtained strange, al- 

 most grotesque individuals in the F 2 generation, some of 



