200 Plant-Breeding 



TYPE IV = GI 



PLOT II IV VI 



1 28 52 20 



2 31 47 22 



Theory 25 50 25 



TYPE V = VC AND VgC 



PLOT % I II V VI 



1 2.4 80.0 17.6 



2 4.72.6 79.8 12.9 



Theory 83 16f 



TYPE VI = GC 

 PLOT II VI 



1 7.7 92.3 



2 100.0 



Theory 100.0 



"The only departures from theory of any consequence 

 in these data are the occurrence of small amounts of 

 Types I and II in the progeny of V, and of II in the prog- 

 eny of VI. Now, Type V of the second generation 

 (VC and VgC) differed from Type III (77) only in being 

 slightly shorter. If a few individuals of III had been 

 included in V in separating the types of the second gen- 

 eration, we should have the actual result obtained in the 

 third generation. Likewise, Type VI of the second gen- 

 eration (GC) differed from II (GI) in the same manner. 

 Evidently a few plants of II got into the Type VI last 

 year, and thus gave the results shown." 



Mendelism summarized. This, in barest epitome, is the 

 teaching of Mendel. This teaching strikes at the root 

 of two or three difficult and vital problems. It represents 



