GENETIC TYPE AND THE ENDOCRINES 81 



which are non-viable. These conditions result from the acci- 

 dental association of contrasted tendencies or from new com- 

 binations of genie interaction. A very unusual individual 

 of this sort occurred in the F 2 bassethound-Saluki genera- 

 tion. This dog, 1439 $ , has been referred to in connection 

 with the exaggerated shortness and grossness of its legs, 

 and is shown as figure 4 in plate 11. The animal was very 

 large and heavy of body, being longer and heavier than 

 either of the parent stocks; its head was much exaggerated 

 in length and the long straight muzzle gave to the face an 

 almost horse-like appearance. The kennel attendants named 

 this animal "Duckbill," doubtless because of the long face 

 and the low duck-like amble in walking. He was kept alive 

 until 3 years of age at which time his appearance and be- 

 havior were those of a rather old animal, although he had 

 been in perfect health throughout his lifetime. Morphologi- 

 cally he showed what may be classed as certain symptoms 

 of acromegaly ; there was excessive growth of much thickened 

 skin over the neck, shoulders and front legs. His hair was 

 of unusually heavy fur-like texture, completely different from 

 that of either parent stock and much like the thickened fur 

 of several shepherd-bassethound dogs in our kennels from 

 which the pituitaries had been removed. Respiration was 

 labored and the dog was rather inactive and slow-moving, 

 usually panting with the tongue hanging out while other 

 dogs were breathing normally. Several attempts to mate 

 this animal were made, but all were unsuccessful. While his 

 gonads seemed well developed, he was incapable as a stud. 

 The texture of his bones was slightly coarse and his endo- 

 crine glands showed some modifications, as will be described 

 in a following chapter. 



The F t bassethound-Saluki backcrossed with the Saluki. 

 In order to further test the genetic reaction for chondro- 

 dystrophy in the leg bones of the bassethound-Saluki com- 

 bination as well as the apparent dominance of Saluki bone 

 constitution over that of the bassethound, backcrosses were 



