THE WOELD OF LIFE. 



645 



I would most strongly advise all who are interested in this vast 

 subject, The World of Life," to read and study Wallace's book; only 

 remembering that it is, of course, natural for the author to cling to his 

 own theory of natural selection, though he has now discovered, what all 

 plant ecologists have known for years, i.e. since Darwin, our first and 

 greatest ecologist, put us on the right track in 1868. 



