20 EDWARD W. BERRY 
River from Washington. These were few and rather poor, but 
sufficient to form the basis for six species, all new, which were described 
by Dr. Arthur Hollick’ in 1904. It is probable that an exhaustive 
search would disclose similar remains elsewhere in this immediate 
region, since the writer has seen fragmentary plant fossils from these 
same beds along the Bennings road near the District lines, and from 
the banks of the Choptank River and Tuckahoe Creek, on the Eastern 
Shore of Maryland. The only other eastern flora of possible 
Miocene age is that from the Bridgeton gravels of southern New 
Jersey which is understood to be quite extensive.? It also has been 
studied by Dr. Hollick but is as yet unpublished. It is considerably 
younger, however, than that of the Calvert formation and may possibly 
be of Pliocene age. 
With these preliminary remarks we turn to a very interesting flora 
found in the Calvert formation at Richmond, Virginia. The 
presence of this flora was discovered by Dr. Benjamin L. Miller dur- 
ing a reconnaissance trip in 1906, but no collections were made until 
the present summer when the writer spent part of two days in making 
a thorough collection at this locality and it is upon this collection that 
the following notes are based. ‘The Calvert formation at this point 
consists of very argillaceous diatomaceous earth forty to fifty feet in 
thickness, resting unconformably upon remnants of the Eocene or 
upon the underlying crystallines and overlain by Pleistocene deposits. 
That this locality was near the shoreline of the Miocene sea, as it is 
near the landward limit of the existing Calvert deposits, is indicated 
not only by the argillaceous nature of the materials as compared 
with similar diatomaceous deposits elsewhere in the Calvert formation, 
but by the contained plant fossils, as well as by considerable com- 
minuted lignite, the latter forming layers 5-12 mm. thick in places. 
Thirteen species are enumerated in the present communication 
and the doubtful fragments uncharacterized at this time include 
perhaps two or three more forms in addition to several varieties of 
seeds not yet identified. The species recognized include seven well- 
known and widespread Tertiary forms and one species, Rhus millert 
t Hollick, ‘“‘ Miocene,”’? Maryland Geol. Surv., 1904, pp. 483-86, Figs. a-h. 
2 A Miocene flora of considerable variety and extent, discovered within the last 
few months in North Carolina, is being studied by the writer at the present time. 
