Chap. L] AC3TI0N OP THE PARTS. 17 



ones, produced more than five times as many capsules, while 

 my figures are 100 : 194. Biisgen gives a good resume of 

 the whole subject, and sums up by saying that the demon- 

 strable superiority of fed over unfed plants is great enough to 

 render comprehensible the organisation of the plants with 

 reference to the capture of insects. F. D.] 



