48 



CHARLES A. COBURN 



different matings used in this study. In addition to the sym- 

 bols they are designated in the tables by the Roman numerals 

 which precede them in the following list. 



I. Female wild and savage X male wild and savage ( 9 w-s X d^ w-s) 

 II. Female wild and savage X male wild and non-savage ( 9 w-s X cf w-n) 

 III. Female wild and non-savage X male wild and savage ( 9 w-n X cf w-s) 



TABLE 34 



Summary oj Results of Third Generation Hybrids, Fs, of Series A, from Matings of Parental 



Generation, Wild Female ■with Tame Male 



Average number tests, 4.21 

 Range of tests, 3-5 First test 



Average age in days : 



First test, 41.64 



Last test, 103.22 



Average 1 and 2. 



14 Fsa Males 

 and Females 



Average all . . 

 Average 3, 4 



and 5 



Last test 



Average number tests, 3.75 

 Range of tests, 3-5 First test 



Average age in days : 



First test, 35.12 



Last test, 98.66 



Average 1 and 2. 



8F3a 

 Males 



Average all 

 Average 3, 



4 and 5. . . 

 Last test 



Distribution of mice 

 in grades: 



Average number tests, 4.83 



Range of tests, 4—5 First test 



Average age in days: 



First test, 48.66 Average 1 and 2 . 

 Last test, 105.5 



Average all 



6 Fsa Average 3, 



Females 4 and 5 



Last test 



SAVAGENESS 



Distribution of mice 

 in grades: 



IV. Female wild and savage X male tame and non-savage ( 9 w-s X d^ t-n) 

 V. Female tame and non-savage X male wild and savage ( 9 t-n X c? w-s) 

 VI. Female wild and non-savage X male wild and non-savage ( 9 w-n X & w-n) 

 VII. Female wild and non-savage X male tame and non-savage ( 9 w-n X cf t-n) 

 VIII. Female tame and non-savage X male wild and non-savage ( 9 t-n X c?' w-n) 

 IX. Female tame and non-savage X male tame and non-savage ( 9 t-n X c? t-n) 

 X. Female tame and non-savage X male tame and savage ( 9 t-n X cf t-s) 

 XI. Female wild and savage X male tame and savage ( 9 w-s X c^ t-s) 



