VIII AUTHOR'S PEEFACE. 



I must not omit a grateful acknowledgment to the stafE 

 of the Geological Department and to Dr. A. B. Rendle and 

 Mr. Grepp of the Botanical Department for their assistance 

 during my visits to the Museum. Mr. Arber's recent work 

 in rearranging and classifying the material in the Fossil 

 Plant Gallery in the Geological Department has done 

 much to lighten the task of recording the Jurassic species 

 represented in the Museum. I am again indebted to 

 Miss "Woodward for the care and skill with which she has 

 drawn the illustrations included in this volume. 



A. C. SEWARD. 



EmiANrrBL College, Cambridge. 

 March, 1904. 



