INHERITANCE IN ABNORMALITIES 



439 



Fig. 20 The first part of the pedigree of 59b, showing the origin of one of the 

 normal lines. The other eleven normal lines were derived much later from 

 the abnormal lines shown in this figure. 



double monsters of the L variety. On January 19, exconjugant 

 56a (fig. 17) had divided to form four abnormals; two of these 

 died without dividing further. One of the other two produced 



