(170 BOTANICAL GAZETTE. 
science was made by Rey. Henry Steinhauer, of Bethlehem, 
Pennsylvania, in a paper read before the American Philosophi- 
eal Society, and published in its ‘‘ Proceedings” for the year | 
1818. In this paper he described and figured ten species of . 
Waller’s genus Phytolithus, which was made to embrace nearly 
all forms of vegetable fossils. Two years later Schlotheim, in . 
his ‘‘ Petrefactenkunde” applied specific names to 78 fossil 
-plants. Brongniart, in his “ Prodrome,” published in 1828, | 
went much farther. He referred many fossil plants to living 
enera, and created a largen umber of new extinct genera. — | 
enumerated 501 species, many of which were fully characterized | 
and thoroughly illustrated in his “Histoire des Végétaux Fos- 
siles. 
oO 
d : 
GroLocicaL Virw.—The most ancient vegetable remalm> 
known are two species of Oldhamia from the Cambrian of Ire — 
land. From the Lower Silurian 44 species, chiefly marine alge, — 
have been named. Among these, however, are included the 
ous strata nearly two thousand species are knowo. ny, ‘. 
species are found in the whole of the Trias. With the Rhetle 
: Pp 
supplied with the remains of vegetation, but in the Cenomaniae, 
to which the beds of Atane Greenland, and our own V@s0 
troup of Kansas and Nebraska are referred, nearly 500 ager . 
of fossil plants have already been found. The Turomiam,” 
its probable equivalent in the west, the Fort Benton Group” 
