No. 551] INFLUENCE OF STARVATION 



The results for Navy are slightly positive, for the other 

 two varieties more conspicuously negative. The mean 

 of the four varieties is — .0291. 



Kegarding only the 10 direct inter-ramal comparisons, 

 we note that 7 are negative and 3 positive ; 3 significantly 

 negative and none significantly positive. The mean of 

 the negative differences is — .0771, of the positive 

 + .0794, of all— .0316. 



The data are available for any one caring to work out 

 the relationships for variabilities. The discussion of this 

 point is reserved until further series are gotten. 



C. Number of Seeds per Pod 

 Tables XVII-XIX give the essential biometric con- 

 stants for number of seeds per pod. Diagram 10 justi- 

 fies the same general conclusions for the mean number 

 of seeds as were drawn from Diagram 9 for mean num- 

 ber of ovules per pod. In one case, however, the average 

 for seeds is lower on a feeding plot than on the starva- 

 tion fields. 3 



Appealing again to constants and their probable 

 errors, we have the results set forth in the tables of fun- 

 damental differences, XX-XXIV. 



The intra-ramal comparisons, Table XX, show three 

 positive and one negative difference. Two of the positive 

 differences are probably and the third possibly statis- 

 tically significant. Note, however, that the age of the 

 seed may be a disturbing factor. Compare the results 

 for number of pods and number of ovules. 



Of the 28 inter-ramal comparisons, Tables XXI-XXIV, 

 15 are negative and 13 positive. 



In the usual manner, we get for the means : 



Navy, Within Strains, A = + -0078 

 Ne Plus Ultra, A = — .0711 



White Flageolet, A =-.0383 



to PlaQtS dM matUTG th6ir SeedS 1 haVe neVer 1)6611 



