328 CHARLES I!. ST0CKARD AND A. L. JOHNSON 



majority of F, hybrids are of about the same size as the F x ; 

 a few are as small as the dachshund and a few are of basset- 

 hound size. These size differences are definite, and there is 

 no overlapping. 



The individuals in the several generations of the basset- 

 hound-dachshund cross have already been recorded in a pre- 

 vious section under a discussion of the inheritance of short 

 Legs. The inheritance of skull size is well illustrated in plate 

 61. Two dachshund skulls (figs. 1 and 2) are seen to be much 

 smaller than the bassethound skull (fig. 3). The F, skull 

 (fig. 4) is of intermediate size. Of the four skulls from one 

 litter of F 2 hybrids, two (figs. 5 and 6) are intermediate in 

 size and very close to the F 1? one (fig. 7) is as small as the 

 dachshund and is also without the sagittal cranial crest, and 

 one (fig. 8) is as large as the bassethound skull and shows 

 the same high sagittal crest along the top of the cranium. 

 This F 2 litter chances to show the expected ratio of size 

 differences, having one small, two intermediate, and one large 

 member. The large size and bassethound cranial crest are 

 recessive to small size and dachshund flat-top cranial pattern. 



In this cross between two breeds of different body size, 

 no hybrids of more diminutive or of greater size than the 

 parent stocks have appeared. This is also true for a number 

 of other crosses between large and small breeds. The giant 

 and dwarf specimens arising from the cross between the 

 equal sized bulldog and bassethound stocks are distinctly new 

 types due to strange genetic combinations. 



Excessive Skin Area and Other Disharmonies of Growth in 

 Hybrids from Breeds with Bulldog Deformities 



Not only do giant and dwarf body sizes appear among the 

 bulldog-bassethound hybrids, but limited and localized growth 

 distortions occur as well. One of the most pronounced of 

 the limited distortions is confined to the exaggerated over- 

 growth of skin. In specimens with this peculiarity, the skeletal 

 frame and total body proportions are of normal size, but 



