348 CHARLES B. STOCKARD AND A. L. JOHNSON 



of this, the lower jaw in the Pekingese has clearly undergone 

 mutation for pronounced reduction in length, as contrasted 

 with the normal dog mandible as well as with the condition 

 in the bulldog head. 



Three Fj males are shown in figures 3 to 5 of plate 67, and 

 two F x bitches in figures 6 and 7. Larger photographs of 

 the heads of these five animals are arranged in the same 

 relative positions in plate 68. 



These F 1 dachshund-Pekingese hybrids are very attractive 

 in both appearance and behavior and were favorites with all 

 the kennel attendants. As plate 67 indicates, the dachshund 

 ancestry is clearly recognizable in their general form. The 

 short legs are derived from both parent stocks, but the length 

 of body and position of the tail suggest the dachshund. The 

 posture of the head and neck is reminiscent of the haughty 

 bearing typical of the Pekingese. These F l hybrids also 

 behave with more assurance and boldness than the dachshund. 

 Their coats are somewhat intermediate : not so completely 

 short and much heavier than in the short haired dachshund, 

 but much shorter and not so feathery as in the Pekingese. The 

 F! animals are quite uniform in size and appearance and 

 individuals can be distinguished from one another only by 

 carefully recording the minor differences in color and mark- 

 ings. The size differences shown in the photographs of plate 

 67 are due to different degrees of reduction; no such notice- 

 able variations exist among the animals. 



The heads of these animals, as seen in plate 68, are strong 

 and well proportioned. The cranium is slightly more spherical 

 than in the dachshund, the depression at the nasion, the 

 so-called "stop," more pronounced, and the muzzle shorter 

 and apparently heavier. In other words, there is a general 

 reduction of the long headed condition through combination 

 with the flattened face and rounded head of the Pekingese. 

 The upper and lower jaws of the F t hybrids are fairly equal 

 in length, and in the majority the occlusion of the incisors is 

 normal; the mandible is very slightly undershot in a few 



