95 



There are many other minor factors which enter into the 

 distribution of a species, such as character of flowers, flowering^ 

 period, length of reproductive season, vitality, size, protec- 

 tive coloration, fragrance, medicinal quality, habits and places 

 of growth, etc., but time would fail me to even mention them 

 all. I have, however, given the most important and present 

 not only them but nearly all others in my schedule of Plant 

 Adaptation appended. 



In conclusion let me say that I find the chief factors of 

 distribution are varying humidity and temperature, assist- 

 ed by wind movements and animals, and modified by barric- 

 and, in individual species, by innumerable devices to' meet i:: 

 demands of climatic changes. 



Delivered April 7, 1900. 



