80 GERMINATION 



The upper 25 per cent, is plumule and the lower 75 per cent, 

 radicle. Some of the fibres of the latter are seen, and on 

 the left is a root filament which has pierced the cuticle, 

 ■which, partly stripped, is pinned on either side of the radicle 

 and plumule. 



To afford evidence of what I have said about the extremi- 

 ties of the root filaments being bare of cuticle to enable 

 them to pick up current from the earth I sketched a fairly- 

 well developed root. 



J^/g.J4 



The parts marked X are bare of cuticle and the lower 

 end of the radicle itself was also bare for 2-inches. 



Pot-GroTvn Seedlings {Continued). 



I did not think there was much to be gained by further 

 observation of the pot-grown seedlings but as three were 

 still in the greenhouse, thought it as well not to waste them 

 and accordingly took one from its pot and washed it. 



It was one of those potted horizontally. The plumule 

 was 6-inches above the seed and had put forth a second crown 

 of leaves, making seven leaves in all. The radicle (extended) 

 was ll|-inches in length, and forked ; its bare end, together 

 with the tips of many of the filaments being very noticeable. 



Just twelve months from the time of potting I examined 

 this seedling again. There was some little additional 

 upward growth and of course greater root-development. 

 The radicle at its junction with the plumule was |-LQch thick 

 and its total length over 17-inches, with several branches. 



