X CONTENTS. 



CHAPTER XYI. 



PlNGUICULA. 



Fmgukula vulgaris — Structure of leaves — Number of iusects 

 and other objects canglit — Movement of the margins of tlie 

 leaves — Uses of this movement — Secretion, digestion, and 

 absorption — Action of the secretion on various animal and 

 vegetable substances — The effects of substances not con- 

 taining soluble nitrogenous matter on the glands — Pinguicula 

 grandiflora — Pinguicula lusitanica, catches' insects — Move- 

 ment of the leaves, secretion and digestion . . Pages 368-394 



CHAPTER XYII. 

 Uteiculaeia. 



Utricularia veglecta — Structure of the bladder — The uses of the 

 several parts — Number of imprisoned animals — Manner of 

 capture — The bladders cannot digest animal matter, but 

 absorb the products of its decay — Experiments on the 

 absorption of certain fluids by the quadrifid processes — 

 Absorption by the glands — Summary of the observation on 

 absorption — Development of the bladders — Utricularia 

 vulgaris — Utricularia minor — Utricularia clandestina 395-430 



CHAPTER XVIII. 



Utkiculakia (continued'). 



Utricularia montana — Description of the bladders on the sub- 

 terranean rhizomes — Prey captured by the bladders of 

 plants under culture and in a state of nature — Absorption 

 by the quadrifid processes and glands — Tubers serving as 

 reservoirs for water — Various other species of Utricularia — 

 Polypompholyx — Genlisea, different nature of the trap for 

 capturing prey — Diversified methods by which plants are 

 nourished 431-453 



Index 455-462 



