r. s. finlow and i. h. buukill. 

 Table IVc. 



83 



Unfixed plants, having green stems with red petioles and 

 fi'uits yielded progeny as follows : — 



Mean ratio of red to green = C-99 : 1. 



Another diagram will serve to make clear the origin of the 

 next series of plants : descendants, in the F, generation, of plants, 

 Howers of which were allowed to fertdize naturally in tlie F, gen- 

 eration (vide Table IT). The reader will note that in 1909 their 

 grandparents were naturally fertilized, and not artificially selfed 

 as were those of the preceding series. 



Artificially cross fertil 



Naturally fertilized in 1-1 



li9"am] g'lwn iri91(l! K-l" 211 119 261 262 26.S 199 201 203 204 206 209 213 214 



Naturally fertilized in ' 

 1910 and grown in 1911. , 



