x CONTENTS. 



CHAPTER XVI. 



PlNGUICULA. 



Pinguicula vulgar is Structure of 1'eaves Number of insects 

 and other objects caught Movement of the margins of the 

 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 XVII. 



UTRICULARIA. 



Ulriculuria iier/lecfa 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 tho 

 absorption of certain fluids by the quadrifid processes - 

 Absorption by the glands Summary of the observation on 

 absorption Development of the bladders Utricularin 

 vulgar is Utricularia minor Utricularia clandestine!, 395-430 



CHAPTER XVIII. 



UTRICULARIA (con tin ued\ 



Utricularia mmitana 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 .. . 155-40? 



