No. .308] X CAPSELLA BURSA-P. \ STORIS . I R. I ( 'HSOIDEA 213 



this directly, provided the form arachnoidea produced 

 seed. Though I have grown several hundreds of these 

 plants, I have obtained in all but eight seeds, and these as 

 the result of hybridization. Hence the test must be made 

 indirectly through crossing of forms yielding the desired 

 gametic combinations. 



TABLE II 



Evidence of Heterozygotic Character of attenuata (bbNn) 



114 



1.25 54 56.50 

 3.50 40 33.00 

 !.'_'.-. 130 12N..-.0 



S.212B/WP1 



2fl!oi2.-l/f2/M 

 2.1.IU2 l/.'l/'2 



2f..t>i2 \i;\r: 



2r..i'12.l/.'l/'l 

 2C..I11 2.1 AT./'ii 

 2t..iU2/>7,'l/ , :i 

 2<i.(U2K/i'l/V, 

 2f>.'.»12/)A'2/'l 

 2(i.'.tl2A7. , f./'(i 

 2t..!M2/-7,'|-./M 



the above ex- 



4. BBnn (squai 

 constitution shon 

 rhombotdea, the e 

 incisions of the ( 

 should breed true. 



offspring, consisting of 50 indi- 



A plant of this supposed zygotic 

 semble, in all respects, Shall 's 

 roset leaves being broad, and the 

 leaves reaching the midrib. It 

 olving four parents, were 



grown. Again it was shown, in the case of No. 26,812 and 



