— 101 — 



It is instructive to note that, in the aggregate here, the 

 right-styled preponderate in a ratio almost identically the 

 converse ofthatgiven in the previous tables. This observa- 

 tion deepens the impression, already received, that in any 

 mixed group of several plants, the total number of right- and 

 left-styled fluwers will be very nearly equal. 



Observations, made for the purpose of finding whether 

 any developmental law governs the sequence of right- and 

 left-styled forms, did not give any satisfactory results. It 

 was noticed to be often, but by no means always, the case that 

 the flrst two flowers of the cyme were both of the same 

 character. No special efFort was made to unravel the maze 

 which the ötructure of the cyme presented ; but, as far as 

 one can judge frora general observation, it would be difficult 

 to dnd grounds for asserting positively that the right- and 

 left-handedness here has reference to the position of the 

 flowers on the axes. 



Experiments in fertilization were carried out with the 

 view of testing the hypothesis that the dimorphism might be 

 of avail in the matter of seed-bearing. Ten plants of the 

 vegetatively-propagated series were used, and the experi- 

 ments in pollination arranged as follows : — 



(1) L, with pollen of same flower — 10 experiments. 



(2) L, with pollen of another L of same plant — lö 

 experiments. 



(3) L,withpollenof Lof another plant —10 experiments. 



(4) R, as in (1) — 10 experiments. 



(5) R, as in (2) — 10 » 



(6) R, as in (3) — 10 » 



(7) R, with pollen of L of same plant — 5 experiments. 



(8) R, with pollen of L of different plant — 5 experiments. 



(9) L, with pollen of R of same plant — 5 experiments. 



(10) L, with pollen of R of different plant — 5 experiments. 



