260 First and Second Toes in Man 



Sub-Table D. Families in which neither mother or father is known^ 

 designated by H. {Iwmogeneous) and M. (mixed). 

 L S A B E 



Total 



Number of 



Offspring 



_ _ _ _ _ _ 52 



2 3 12 _ _ 40 



32 _ 29 44 3 8 2 3 1 2 - — n2(35<?+57? 



Sub-Table E. Tracings of persons (parents) ivho do not ajippar in 



A, B, C or D. 



L S A 11 E 



Table VII (Sub-table A) gives an analysis of the various types of 

 matings and of the offspring. The total number of families consisting 

 of two complete generations is 123, producing on the average about 

 three offspring each. 



Fifty-four matings of Z </" x Z $ were obtained, which produced 154 

 offspring, all of which were L except 4, which were A and B (Fig. 4, 

 Trees B and G). This indicates that the L type practically breeds true. 

 The persistence of the L type is seen in Fig. 4 (Trees A, B, C). It 

 was not possible for me to see the four exceptional cases, but re-tracings 

 in each case confirmed the type. An enquiry was made into the history 

 of these four exceptions (3 A and 1 B). Tree C in Fig. 4 shows the 

 family of one male A in which there is no trace of any departure from 

 the L type. The one case of a male B, as shown in Fig. 4, Tree B, 

 gives an L ancestry of both the male and female parents, but there is 

 nothing here to show that one of the parents was not heterozygous. 

 Consideration may next be given to the two females (Table VII, Sub- 



