CONTENTS XV 



PAGE 



The least frontal width of the cranium as related to length of total 



skull base 169 



Comparisons of the lengths of various facial parts and regions of 



the skull 171 



Does the length of jaw directly determine tooth size? 177 



Comparisons of mandibular length with other mandibular dimensions . . . 180 

 The relation of the bony palate to the skull base and to the size of the 



palatal process of the palate bone 182 



Comparison of measurements from the orifice of the auditory meatus 



to several definite points 186 



Comparison of the same skull dimensions arranged in another sequence 193 

 Comparisons of measurements between given points along the mid-dorsal 



line of the skull 199 



Length of skull base in relation to anteroposterior length of premolar 



tooth crowns 203 



Kesume of deductions from linear measurements made on different 



skull types 205 



Determination and comparison of skull indices among various dog breeds . . . 207 

 Graphic comparisons of measurements and indices among similar and 



contrasted skull types 211 



Crosses between dog breeds with highly contrasted types of skulls 224 



The genetics and expression of skull characteristics in hybrids between 



the Boston terrier and the dachshund 226 



The backcrosses of the Fj hybrid Boston terrier-dachshund on the 



two pure stocks 244 



The expression of individual features in the skulls of Boston terrier- 

 dachshund hybrids 249 



The behavior of skull characteristics in the French bulldog-dachshund 



hybrids 259 



The bulldog achondroplasic skull ; its modified growth and development 272 

 The contrasted skulls of the English bulldog and the German shepherd 288 



Genetic constitution and endocrinic abnormality as factors in the growth 

 and structural modifications of the English bulldog-bassethound 

 hybrids 295 



The head and skull features in English bulldog-bassethound hybrids; 



new types from new constitutional complexes 298 



Indices and proportions in individual skulls from the bassethound- 



bulldog cross 304 



Both giant and dwarf reactions for body size among F 2 bassethound- 



bulldog hybrids 322 



