Vlll PREFACE. 



read through every sheet, and to whom I am greatly indebted for 

 many criticisms and suggestions. I have also to thank Mr. I. H. 

 Burkill for his kind assistance in looking over the proofs of the 

 Monocotyledons and Dicotyledons, and Mr. Harold Wager for 

 kindly reading through the proofs of the Algce and Fungi. My 

 thanks are also especially due to Mr. E. L. Danielsen, and I wish 

 to take this opportunity of acknowledging the very considerable 

 help which I have received from him in translating from the 

 Original Danish. 



M. C. POTTER. 

 January, 1895. 



