Analysis of Heterogeneity in Some Simplest Characters 235 



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. 



Parents, 

 index. 



Progeny. 



Fraternity No. 



^ 



Range of index. 



Totals. 



1. gP 



2. gP 



3. g P 



4. g P 



5. g P 



6. g P 



7. g P 



8. g P 



9. g P 



10. g P 



11. gP 



12. g P 



13. g P 



14. gP 



15. g P 



16. g P 



17. gP 



Stock 2 Mass... 

 Stock 2 Pt. A . . 

 Stock 2 Pt. B... 

 stock 2Pt. C... 



2.757 

 2.741 

 2.569 



2.701 

 2.564 

 2.778 

 2.731 

 2.521 

 2.631 

 2.700 

 2.754 

 2.689 

 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 



Igl 



2.gl 



3.gl 



4 gl 



5gl 



6.gl 



7 gl 



8. g I 



9.gl 



10. g I 



ll.gl 



12gl 



13. g I 



14. g I 



15. g I 



IC. gl 



17.gl 



M. 2. g I . . . 

 M. 2. g 1(A) 

 M. 2. g 1(B) 

 M. 2. g 1(C) 



JM. 



If. 



f M. 

 IF. 

 (M. 



If. 



(M. 

 IF. 

 (M. 

 IF. 

 JM. 



If. 



fM. 



If. 



[f. 



JM. 



If. 



JM. 



If. 



JM. 



If. 



JM. 



If. 



JM. 

 IF. 

 (M 

 IF. 



!^: 



JM. 



If. 



\l 

 \f. 

 [l 

 \f. 



TotaL 



43 » 



44) 



64i 



49) 



27) 



34 J 



23} 



30) 



33) 



36) 



42) 



39) 



38) 



46) 



16) 



21) 



27 



34 



49 



60 



53 



37 



I 



S! 

 J?} 

 i\ 



24/ 

 31) 

 17) 

 17 J 



*0^ 100 

 60 J ^"" 



551 

 63j 



163 ) 327 



164 J '*'" 



32 



34 



55 



34 



118 



37 



34 



.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 (&) 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 



