38 BULLETIX OF THK >fATURAL HISTORY SOCIETY. 



Adaptations wliicli effect locomotion of one reproductive 

 body (male) to the other (female) : problem in general 

 similar to that of locomotion for spreading (treated in 

 Bulletin XIII.), but in some ways more difficult : classi- 

 fication of possible and actually used principles of locomo- 

 tion (compare Bulletin XIII., p. 7.) : ph^'sieal or climatic 

 conditions under ^vhich plants live, andhow these influence 

 locomotion of tlie sexual elements : advance from free 

 swimming Zoospores and antherozoids to locomotion b\' 

 utilization of wind and auimals, culminating in the flower, 

 which is thus but a pollen-locornoting apparatus : full 

 discussion of pollen-locomotion, often called cross-ferti- 

 lization. Section III. Suggestions for study by local 

 botanists. 



I had intended to take up next F Adaptdiions to 

 Protection., including enemies and weather; next D. 

 Response io Stimuli, the phenomena of Irritability which 

 deal with individual adaptation to the outside world ; 

 next, B. Grointh, including individual and race develop- 

 ment ; next, A. Nutrition., of greatest importance 

 since it determines the very existence of leaf, stem 

 and root : G. the Key., so arranged that one could, by 

 observing a certain peculiarity of structure, si^e, form, etc., 

 be referred to the i)receding papers where its causes are 

 discussed. Finally should come H., the application of 

 these principles to the study of the vegetation of Acadia 

 and its geographical distribution. 



Although for the reasons given, I discontinue the series 

 as a whole, I propose to continue the investigation of the 

 latter section, our ecological plant-geography, and my 

 paper " Upon the Raised I'eat Bogs of New Brunswick.,'' 

 presented to the Royal Society of Canada in Ma}' last, 

 and now being more fully elaborated, may be considered 

 a first contril)ution to that undertaking. 



