CONTENTS. 



CHAPTER I. 



Drosera rotukdifolia, or the Common Sun-dew. 



Number of insects captured Description of the leaves and their append- 

 ages or tentacles Preliminary sketch of the action of the various 

 parts, and of the manner in which insects are captured Duration of 

 the inflection of the tentacles Nature of the secretion Manner in 

 which insects are carried to the centre of the leaf Evidence that the 

 glands have the power of absorption Small size of the roots. 



Pages 1-17 



CHAPTER II. 



The Movements of the Tentacles from the Contact of 

 Solid Bones. 



Inflection of the exterior tentacles owing to the glands of the disc being 

 excited by repeated touches, or by objects left in contact with them 

 Difference in the action of bodies yielding and not yielding soluble 

 nitrogenous matter Inflection of the exterior tentacles directly 

 caused by objects left in contact with their glands Periods of com- 

 mencing inflection and of subsequent re-expansion Extreme minute- 

 ness of the particles causing inflection Action under water Inflec- 

 tion of the exterior tentacles when their glands are excited by 

 repeated touches Falling drops of water do not caus inflection. 



18-32 



CHAPTER III. 



Agqreoation of the Protoplasm within the Cells of 

 the Tentacles, 



Nature of the contents of the cells before aggregation Various causes 

 which excite aggregation The process commences within the glands 

 and travels down the tentacles Description of the aggregated masses 

 and of their spontaneous movements Currents of protoplasm along 

 the walls of the cells Action of carbonate of ammonia The granules 

 in the protoplasm which flows along the walls coalesce with the cen- 



