g2 Seward: The Jurassic Flora of Yorkshire. 
Yorkshire types by means of a table of geographical distribu- 
tion, and a map shewing some of the many localities from 
which Jurassic plants are recorded, selected from the 
point of view of emphasising the world-wide occurrence of 
remains of Jurassic floras. The floras chosen represent a 
comparatively small number of those which have been des- 
cribed by different authors. It must also be clearly stated 
that the records given in the table must not be regarded as 
implying that the Yorkshire plants are represented in the 
various localities by specifically identical forms ; while there can 
be no doubt as to specific identity in certain cases, the dis- 
tribution records as a whole are intended to draw attention 
to the occurrence in the selected regions of similar types, and 
not in all cases identical species. The plants chosen are not 
by any means peculiar in their wide distribution, other British 
types might be cited in further illustration of the general 
uniformity of the Jurassic vegetation. The numbers printed 
on the map are repeated in the table of distribution. 
The distribution records given in the accompanying table 
are based on the figures and descriptions contained in the fol- 
lowing publications :— 
BornHoiMmM. Waller, H. ‘ Bidrag till Bornholms Fossila 
Flora; Part I., Lund, 1902>Pt IL, Stockholm;(1g03: 
PoLAND. Raciborski, M. ‘ Flora Kopalna, Cracow,’ 1894. 
TURKESTAN. Seward, A.C. Jurassic plants of Caucasia 
and Wurkestan. “Mem. Com Géol, St) “Petersburg, wok 
SOO VL, “T9077. 
SIBERIA. Heer, O. ‘Flora Fossilis Arctica,’ vols. IV.-VI., 
1877-80. 
Korea. Yabe, H. Mesozoic plants from Korea. “ Journ. 
Coll. Sci. Imp. Univ. Japan,’ vol. XX., 1905. 
JAPAN. Yokoyama, M. Jurassic plants from Kaga, 
Hida, and Echizen. ‘ Journ. Coll. Sci: Imp. Univ. Japan, 
vol. III., 1889 
JAPAN. Yokoyama, M. Mesozoic plants from Kozuke, 
Ki, Awa, and Toza, Ibid., vol. VII., 1894. 
SPITSBERGEN AND FRANZ JOSEF LAND. WNathorst, A. G. 
“Zur fossilen. Flora der Polarlander Kongl. Svensk. Vet.- 
Akad. Hand; Vol: XXX), 1897... 
Newton, E. T., and J. J. H. Teall. Notes oma‘ collection 
of Rocks and Fossils from Franz Josef Land, made by the 
Jackson-Harmsworth Expedition during 1895-96.  ° Quart. 
Journ. Geol Soc? “Voll PUI tx697- 
Nathorst, A. G. The Norwegian North Polar Expedition, 
1893-96, Pt. III. Fossil plants from Franz Joseph Land. 
Christiania and London, 1899. 
GREENLAND. Hartz, O. — Planteforsteninger fra Cap 
Stewart 1 Ostgronland, 1896. 
Naturalist, 
