AUTHOR'S PREFACE 



IN the present volume the same method of treatment has 

 been followed as in Part I. 



My thanks are again due to Mr. George Murray, 

 Mr. Carruthers, and to the Assistants of the Geo- 

 logical and Botanical departments generally ; also to 

 Mr. Rufford and Mr. C. Davies Sherborn. 



To the Director of the Royal Gardens, Kew, I am 

 indebted for the facilities afforded me of repeatedly 

 examining the exceptionally large collection of cycadean 

 plants in the Kew Herbarium. 



I wish also to gratefully acknowledge communica- 

 tions from the late Marquis of Saporta, Sir William 

 Dawson, Prof. Nathorst, Prof. Lester Ward, and others ; 

 and to express my thanks to Miss Gertrude Woodward 



