dUO CHARLES R. STOCK ARD AND A. L. JOHNSON 



The snout index for the nine F x hybrid skulls is low, over- 

 lapping and extending only a little above the bassethound 

 range. The thirty-seven F 2 skulls range in snout index from 

 the bassethound low level of 58 up to almost 120, or, in 

 other words, from long, narrow skulls to those in which the 

 width of the jaw is greater than its length. However, this 

 maximum for the F, falls far short of the pure bulldog 

 proportion with a length of only two-thirds to one-half as 



Text -figure 06. Bassethound-English bulldog cross. Each vertical line repre- 

 sents an index based on exact measurements of the skull, and the series includes 

 those used in text-figure 65 as well as a number of additional skulls. A, basset- 

 lmund; B, English bulldog; C, F t ; D, F.; E, backeross of F t with bassethound; 

 F, backeross of Fj with English bulldog. 



great as the width for the upper jaw. Almost half the F 2 

 skulls again fall for this index within the F 1 range. The 

 trend of F 2 indices is considerably closer to that of the basset- 

 hound than to that of the bulldog. 



The two skulls measured for this index from backeross 

 bassethound hybrids have the exact values of those for the 

 pure bassethound. In contrast, the two backeross bulldog 

 hybrids have short snouts with high indices of 115 and 133. 

 The higher of these is onlv 6 units below the lowest index 



