314 Association of American Geologists and Naturalists. 
a great number of localities between the Potomac and Rappahannock 
Rivers, the James River below City Point, Petersburg on the Appo- 
mattox River, and a tract about Dupre’s bridge on the Nuhenen River. 
Further search will, I am convinced, greatly multiply these localities, 
and the observations already made are quite sufficient to prove the wide 
horizontal extension of this interesting division of our tertiary series. 
Although in some of these localities, as at Richmond, the stratum re- 
poses upon beds containing eocene impressions, and although beneath 
the miocene strata, at other places, as for example the Stratford cliffs 
and Petersburg, it is underlaid by unequivocal miocene, and hence at 
these places, if not generally, is to be referred to a position in the geo- 
logical series within and near the bottom of the miocene division of the 
tertiary, | am inclined however to the opinion that these strata are not 
all upon exactly the same horizon, and that some of them lie in a higher 
part of the formation. M. Tuomey of Petersburg, who has recently 
observed the deposit at that place estimates its thickness at thirty feet.* 
In connection with these statements it may be interesting to add, that 
accompanying the infusorial material I have found vegetable remains 
at some localities in great abundance. They are imperfectly carbo- 
nized, still preserving their form and the fibrous texture, and they seem 
all to be referable to creeping and apparently cryptogamous plants. 
From the specimens I am now collecting, I hope to be able to decide 
with some certainty as to their true character. 
Mr. Dana remarked that he had observed the same form of 
microscopic shell, as No. 7 of Prof. Bailey’s figures, in Oregon. 
Prof. Bailey said the same form had also been found on the 
coast of England, probably washed from the chalk. 
Mr. W. C. Redfield read a paper entitled ‘remarks on some 
new fishes and other fossil memorials from the new red sandstone 
of New Jersey.” 
In this paper Mr. R. alluded to the general absence of fossils in this 
formation and the enhanced geological value of the few fishes and other 
remains which had been brought to light, and submitted to the Associa- 
tion specimens of three new species of these fishes which he had ob- 
tained from near Pompton in New Jersey. He referred to the allied 
characters of these fishes with specimens which he submitted from the 
new red sandstone formation of England, and particularly to the slightly 
heterocercal character of their caudal structure. He showed their dis- 
similarity to the more heterocercal forms of the fishes of the coal for- 
mation, even when of the same genus, and their want of analogy to the 
* See this Journal, Vol. xxrv, p. 339. 
