PREFACE. 



This second and concluding Part of Mr. Seward's Catalogue 

 of the Jurassic Floras is rendered somewhat unsatisfactory 

 by the very fragmentary nature of nearly all the fossils 

 hitherto discovered. Its value, however, is much enhanced 

 by the care with which the author has compared the more 

 important specimens in other Museums with the collection 

 in the British Museum, which is the immediate subject of 

 his work. The plan adopted makes the Catalogue a nearly 

 complete treatise on the known fossil remains of plants from 

 the Trias, Rhsetic, Lias, and Oolite of England ; and, with 

 all its necessary imperfections, it forms a secure and valuable 

 basis for future research. 



ARTHUR SMITH WOODWARD. 



Departmbni of Geology. 

 March, 1904. 



