v1 PREFACE. 
We are fortunate in possessing many of Mantell’s 
original specimens of Wealden plants, but, although his- 
torically of great interest, they are largely superseded 
by those recently obtained by Mr. P. Rufford, whose fine 
collection has lately been acquired for the National 
Museum. 
It is satisfactory to know that in this country the 
long-neglected study of the Mesozoic plants is now being 
taken up by so able a Botanist as Mr. Albert Seward, 
and that the first instalment of his Catalogue is now 
complete. 
It is expected that the Wealden plants will occupy two 
fasciculi, and that the Oolitic plants of Yorkshire, of 
which the Museum possesses exceptionally fine materials 
obtained by the late Mr. Bean, by Dr. Murray of 
Scarborough, and other well-known collectors, may be 
similarly treated by Mr. Seward. 
HENRY WOODWARD. 
DEPARTMENT OF GEOLOGY, 
March 10th, 1894. 
