PLATE 2 
EXPLANATION OF FIGURES 
8 Deficient chromosome (4—) in the anaphase of the first spermatocyte. 
9to13 Acridium granulatum. 
9,10 From two normal males. 
9 Spermatogonium; No. 1 chromosomes normal. 
10 First spermatocyte, No. 1 tetrad normal. 
11 Follicle cell of female. One abnormally long (23-valent) No. 1 chromosome. 
12,13 From abnormal male. 
12 First spermatocyte, the 2}-valent, abnormal, No. 1 (1) separating from 
its normal mate (1); going with the sex chromosome. 
13 First spermatocyte, the 23-valent No. 1 chromosome not going with the 
sex chromosome. 
