286 NOTICES OF BOOKS. 



chapter is devoted to the ecology of the freshwater Algae ; as this 

 subject is, however, still in its infancy any very satisfactory account 

 with our present knowledge is impossible ; but the results which 

 are given, based largely on the author's wide experience during 

 twenty years, are very interesting indeed, and this chapter will 

 well repay careful study. In fact, there is here almost an open 

 field for the student to increase our knowledge. 



There are bibliographies to each group of Algae and an excel- 

 lent index; the illustrations in the text comprise 1,284 lettered 

 or numbered figures. 



We congratulate the author on the completion of this valu- 

 able contribution to botanical literature and the Syndics of the 

 University Press on the appearance of the first of the " Hand- 

 books." 



