314 Index, 



PAGE 



Instinct, imitation of, in plant life 60, 62 



connected with structure and function 71-74 



its first connection in bird with processes below 



it 85, 87 



and physiology work together in every animal S9 



structure and function in reference to past species. . 90 



of one animal takes advantage of that of another, . . 91 



not burdened with what function can do 92 



is proved by the wisdom of the act 93 



pure, needs no experience 94 



preserves life until knowledge from experience is 



possible 94, 95 



a natural development according to fixed law, . .95, 96 



permanence of type in the work of 103 



not to be counfounded with intelligence — pure in- 

 stinct 107, loS 



defective — supplemented 109 



the relation between — and appetites should be under- 

 stood to avoid great confusion 112 



accomplishes results without the comprehension of 



means and ends in the actor 112 



self-adjusting pov/er of. Examples — eye, woodbine, 



bean T13, 114 



study of plant life needed to prevent wrong conclu- 

 sions in reference to 115 



higher manifestations of — that have no relation to 



appetites or functions 115 



fear of enemies makes one animal a sentinel for 



others 116 



causes united action in time of danger — illustration. 117 

 to simulate death in order to save life, an original 



gift iiS 



not a perfect guide in climatic changes — ex-muskrat. 119 

 leads the partridge to plunge beneath the snow for 

 protection from cold — but death sometimes fol- 

 lows in consequence 121 



enables some animals to find their homes 122 



necessity of careful observation in the study of.. 123, 124 



