160 Life and Death, Heredity and Evolution 



ABNORMAL 

 ABNORMAL 



ABNORMA 



ABNORMAL ABNORMALABNORMAL ABNORMAL 



ABNORMAL; 



DEAD 



Figure 44. A family of Paramecium caudatum, descended from an 

 ex-con jugant, and showing hereditary abnormalities. Besides the indi- 

 viduals figured, other abnormal branches of the family are indicated 

 by the lines with the word "abnormal." After Stocking, 1915. 



abnormalities, although none were present before conjuga- 

 tion. 



