CONCLUSION. 301 



useless, and cannot even exist without a proper supply 

 of light and air ; but, whereas it has been the custom 

 to ascribe the heliotropic and other motions to the 

 -direct influence of those agents, I would rather suggest 

 that the movements are to some extent due to the 

 desire of the plant to acquire its necessaries of life." 



The more I have reflected upon Mr. Tylor's Car- 

 shalton experiments, the more convinced I am of their 

 great value. No one, indeed, ought to have doubted 

 thdt plants were intelligent, but we all of us do much 

 that we ought not to do, and Mr. Tylor supplied a 

 demonstration which may be henceforth authoritatively 

 appealed to. 



I will take the present opportunity of insisting 

 upon a suggestion which I made in " Alps and Sanc- 

 tuaries" (pp. 197, 198), with which Mr. Tylor was 

 much pleased, and which, at his request, I made the 

 subject of a few words that I ventured to say at the 

 Linnean Society's rooms after his paper had been 

 read. " Admitting,"' I said,." the common protoplasmic 

 origin of animals and plants, and setting aside the 

 notion that plants preceded animals, we are still faced 

 by the problem why protoplasm should have developed 

 into the organic life of the world, along two main lines, 

 and only two — the animal and the vegetable. Why, 

 if there was an early schism — and this there clearly 

 was — should there not have been many subsequent 

 ones of equal importance ? We see innumerable sub- 

 divisions of animals and plants, but we see no other 

 such great subdivision of organic life as that whereby 

 it ranges itself, for the most part readily, as. either 



