PREFACE VU 



of Caen : he was a generous friend to whom one never appealed 



in vain for assistance. Through the kindness of the Director 



of the Indian Geological Survey I have been able to examine 



several fossils from the Calcutta Museum described by Oldham 



and Morris and by Feistmantel. With the Director's permission 



several photographs and drawings made for a forthcoming 



paper to be published by the Indian Survey are reproduced 



in this volume. I take this opportunity of thanking friends 



in Australia who recently afforded me facilities for examining 



fossil plants in their charge, and I would especially thank 



Mr A. B. Walkom of the University of Brisbane, who has 



recently undertaken an investigation of the rich plant-beds 



in the Ipswich district, for all that he did to enable me to make 



the most of a very short time available >for palaeobotanical 



work. 



For the loan of specimens and for-other help I am indebted 

 to Prof. Bayly Balfour, Prof. Bower, Prof. Margaret Benson, 

 Prof. Oliver, Sir David Prain, Dr Smith Woodward, Prof. Weiss, 

 the Director of the Geological Survey, Dr A. H. Church, Dr 

 Arber, and other friends. I would also acknowledge a debt, 

 by no means inconsiderable, to my Colleague Mr Hamshaw 

 Thomas. Among younger friends in the Cambridge Botany 

 School to whom I am indebted I wish- particularly to thank 

 Miss Ruth Holden, Miss Bancroft, Mr Sayers, Mr Dutt and 

 others who have rendered me willing help. 



In the List of Illustrations mention is made of Corporate 

 Bodies and individuals from whom blocks have been obtained, 

 and I am grateful to them for readily responding to my 

 applications. 



My Wife, though prevented by more urgent calls in the 

 later stages of my task from giving as much time to the illustra- 

 tions as in the two former volumes, has contributed several 



a5 



