EXPERIMENT STATION REPORT. 447 



^yled plants. Again, there is no evidence of any soil influence 

 upon dimorphism. Boxes 5 and 6 show an excess of long-styled 

 •plants, and greatest when the mother plant had grown upon very rich 

 soil — a result that agrees with the duplicate boxes in the first series. 

 On January llth a duplicate of the previous two sets was made, 

 so far as the seeds employed is concerned, but the soil used was the 

 same in all boxes and was three-fourths clean sand to one-fourth of 

 fine soil, and therefore the nourishment was scant. The plants were 

 :3mall, and the following is the result : 



LoDg-styled. Short-styled. 



Box I , 11 23 



Box II 11 11 



Box III 20 20 



Box IV 13 10 



Box V 14 9 



Box IV 17 11 



Totals 86 84 



The totals are nearly the same. The two boxes with " long-styled 

 •seed" gave 31 long-styled plants and 43 short-styled plants, while 

 the two boxes with "short-styled seed" produced 25 long-styled 

 plants and 21 short-styled' plants. Here the form of the flower in 

 the mother plant does not show any positive influence upon the 

 offspring. Boxes 5 and 6 have a large excess of long-styled plants, 

 "the greatest being when the parent seed was grown upon poor soil. 



By combining the three above sets the following results are ob- 

 tained : 



, Long-styled. . Short-styled. . 



Box 1 11 9 11= 40 12 16 23= 51 



Box II 11 12 11= 34 25 11 11= 47 



Box III 11 12 20= 43 17 10 20= 47 



Box IV 22 13 13= 48 20 14 10= 44 



Box V 20 11 14= 45 18 5 9= 32 



Box VI 14 11 17= 42 21 8 11= 40 



Totals 98 68 86 = 252 113 64 84 = 261 



It is seen that the totals for the two forms are practically the same. 

 The "long-styled seed" gave 83 long-styled and 98 short-styled 

 plants, while the "short-styled seed " produced 82 long-styled and 91 

 short-styled plants — that is, both forms of mother plants produced 

 ^n excess of the short-styled form. 



"With mixed seed — that is, without regard to form of parent — that 

 from very rich soil gave 31 long-styled and 23 short-styled plants, 



