548 Heritable Spiral Torsions. 



Total 25 20 



A and B are two groups which had been produced 

 from seeds separately harvested from two seed-parents 

 of 1892. 



The extent of the culture is, as we see, too small to 

 allow of an exact determination of percentage values. 



Seed was saved in the autumn of 1894 from the four 

 best plants which had been isolated from the rest before 

 they flowered. 



The sixth generation (1895-1896) again produced 

 a better result, viz., 42% twisted mani stems, a result 

 due in part at least to the increase in the distance between 

 the plants in the culture, which was in other respects the 

 same as in the previous year. The seed of 1894 was 

 sown in the middle of March in pans in the greenhouse. 

 The seedlings were transplanted to pots in April and into 

 the bed in May Altogether there were only ZZ plants 

 on 4 scfuare meters, that is about 8 per square meter. 

 In October I found 14 rosettes with a spiral arrangement 

 of their inner leaves, whilst seven were ternary and 12 

 decussate, that is 42% spiral, 21% ternary, and Z6% 

 decussate. This result was confirmed in May and the 

 decussate and ternary individuals were thrown away. The 

 six individuals with the finest torsions were selected as 

 seed-parents and isolated before flowering. 



The seventh generation (1897-1898) was grown in 

 practically the same way. Seeds of 1896 were sown in 

 the greenhouse in May 1897, were transferred to pots 

 later, and to the beds at the beginning of July at the rate 



