508 WHITE— STUDIES OF INHERITANCE IN PISUM. 



Green seed coat varieties : Telegraph, Telephone, Fillbasket 

 (Lock, Bateson and Kilby, i, 54)- 



Gray seed coat, violet stippling: Graue Riesen, Svalof P. arv., 

 IV. (Tschermak, 8i, 86) ; Sutton's French Sugar Pea (Lock, 53) ; 

 Blauhiilsige (Fruwirth, 34). 



Gray seed coat, maple marbling: P. arv., IX., P. arv., X. (Tscher- 

 mak, 81, 86) ; Irish Mummy (Bateson, i). 



Gray seed coat, violet stippling, maple marbling: Ceylon Native 

 Pea No. 2 (Lock, 54). 



Gray green, bright orange tint : Svalof P. arv., VI., P. arv. No. 

 VII., P. arv., IX. ?, P. arv., X. (Tschermak, 81-86) ; Pahlerbse with 

 purplish pods, Purpurviolettschottigen Kneifelerbse (Correns, 14). 



Dark brown seed coat: Red-flowered Kneifelerbse with purple 

 pods — Tschermak, 86. 



Brotvn hilnvn: P. arv., VI., P. arv., VII., P. arv., VIII., P. arv., 

 X. — Tschermak, 81, 86. 



Violet eye: P. arv. No. IX., violet-eye Victoria — Tschermak, 

 81, 86. 



Black eye: In most cases varieties not given. Black-eyed Mar- 

 rowfat — Macoun, 57.5 ; Haage & Schmidt's Kapuziner, Bohnenerbse 

 (H. & S.), Lyngby Fall Pea (U. S. Dept. of Agr.), Benton (U. S. 

 Dept.), Prince (S. P. I. 22046, U. S. Dept.) — White (unpublished 

 data). 



Results from Crossing. 



Colorless X colorless seed coat always gives colorless or trans- 

 parent seed coats (i). 



Colorless X green or white (opaque) gives various results, but 

 never fully opaque seed coats. In some cases the F^ hybrids are 

 colorless, in others intermediate as regards opaqueness and the 

 presence of pigment. 



Opaque X opaque ( i ) always gives F^ progeny with opaque seed 

 coats. 



Colorless X gray brown seed coat always gave all gray browns 

 in Fj. In the Fo generation, the following results have been ob- 

 tained : 



