No. 539] SHORTER ARTICLES AND DISCUSSION 7( 



ber which is discontinued when it appears that the plants are 

 similar in constitution. Numbers given in each generation are 

 carried along separated by a hyphen in the manner usually fol- 

 lowed in such work. 



Each character that appears is designated by a letter of the 



CRO^S.272 

















1 SERIES OF 1910 CROP OF 1911 



3S 

 3L 

 37 

 3f 

 31 

 ±0 



% 

 ?- / 

 3 





I 

















1 



I 



\ 



4- 





i 



::' 



I 



: 



Ah 

 f 



i 

 1 



















alphabet and in order to secure opportunity for recording a large 

 number of characters they are more or less arbitrarily grouped, 

 each group having if needed the whole twenty-six letters avail- 

 able. Each group is assigned a column in the card. In order to 

 illustrate this a portion of the type designations we have used 

 with beans is here given which with Fig. 3 will clearly show the 

 application of the system. The same blank may of course be 

 used with plants other than beans. 



Plant type: Fruit types: 



ft = pole form, s = pod straight, 



• = runner form, u — pod curved. 

 j = bush form. 



Pod types: 



Flower types: a = light green, 



a = white, b = medium green, 



b = light pink, c = dark green, 



