Analysis of Hetekogeneity in Some Simplest Characters 225 



All that the tables show is that the 5 stocks and the 17 pairs were like in their 

 index and with ranges of the individual fraternities that in the main were 

 similar. In all respects a " pure " biotypic strain had been isolated in this 

 complex species, showing the " customary fluctuations." What was the nature 

 of the fluctuations ? 



Table 28. 



No. of mating. 



1. gP 



2. gP 



3. g P 



4.gP 



5.gP 



6. g P 



7. gP 



8. g P 



9. g P 



10. gP 



11. g P 



12. g P 



13. gP 



14. gP 



15. g P 



16. g P 



17.gP 



Stock 2 Mass. . . 

 Stock 2 Pt. A . . 

 Stock 2 Pt. B... 

 Stock 2 Pt. C... 



Parents, 

 index. 



2.757 



2.741 



2.569 



2.701 



2.564 



2.778 



2.731 



2.521 



2.631 



2.700 



2.754 



2 



2.761 



2.965 



2.581 



2.913 



2.600 



r2.924 



2.531 



L2.754 



2.634 

 2.595 

 2.781 



2.558 

 2.962 

 2.754 

 2.754 

 2.776 

 2.983 

 2.728 

 2.725 

 2.940 

 2.799 

 2.961 

 2.892 

 2.760 

 2.769 

 2.794 

 2.622 



2.810 



2.728 

 2.835 

 2.744 



2.911 

 2.701 

 2.811 



Fraternity No. 



1-gI 



2 gl 



3.gl 



4 gl 



5. g I 



6.gl 



7 gl 



8. g I 



9.gl 



10. g I 



11. g I 



12. g I 



13. g I 



14. g I 



15 g I 



IC. g I 



17. gl 



M. 2. g I . . . 

 M. 2. g 1(A) 

 M. 2. g 1(B) 

 M. 2. g 1(C) 



Progeny. 



Range of inde.x. 





{I 



(M. 



If. 



{f. 



{?: 

 {I 

 {?: 



{?: 

 {f. 



(M. 



If. 



JM 



IF. 



{f. 

 {I 



!?. 

 U': 

 \f. 



1 



2 



4 



7 



3 



2 



9 

 12 



4 

 11 



19 

 21 18 



1 . 



1' 

 7i 

 8| 5 



2 1 

 3l 1 



Totals. 



431 

 44) 

 64) 

 49) 

 27) 

 34) 

 23) 

 30) 

 S3) 

 36) 

 42) 

 39) 

 38) 

 46) 

 16) 

 21) 

 27) 

 34; 

 49) 

 60 i 

 21) 

 11) 



J?! 



24) 

 31) 

 17) 

 171 



87 



53 



84 



37 



109 



32 



19 



55 



34 



118 



551 

 631 



163 ) 097 



164 J '*'" 



37 



14) 

 23) 

 35) 

 37) 



23) 



72 



Total. 



.1817 



Three possibilities existed with regard to these ranges in the index: (a) 

 they may be entirely environmental in origin and show simply the plasticity 

 of the material in its response to the conditions of the medium; or (6) the 

 range may be due to " impurities " in the organism, which are present in a more 

 or less loosely combined state, but produce divergence and a range in some of 



