32 L. Lesquereux—Land Plants of the Lower Silurian. 
mation is too remarkable a fact to be accepted without positive 
evidence. Being at that time about to take the field for geo- 
logical explorations, I merely took a sketch of the specimens 
and returned them to the owner, purposing to examine more 
closely into the matter at a future _ — by going to Le- 
anon or by corresponding with Dr. ville. On my return, 
as Rev. Mr. Herzer had parted with des specimens, I sent to Dr. 
Scoville a sketch of the fossil under consideration, in order that 
he might recognize it, if it had been in his hands, ‘and with the 
request to positively state whether he himself found the speci- 
mens, and when, and whether he had any more of the same 
ind. In his answer he writes: “I can say now most empha- 
ticaliy, that I found in Longstreet Creek, about six miles east of 
Lebanon, a fossil which resembles the sketch accompanying 
your letter in all the essential features. The specimen was, I 
think, in two pieces, or perhaps Mr. Herzer took only one piece. 
I know within a rod or two where it was found. Its position 
or horizon, in the Lebanon beds, wasaboutthe middle. Should 
any one question the accuracy of my statement in regard to the 
discovery of a specimen of this character, in the locality desig- 
nated, I would refer them to Mr. S. R. O’Neall of this place, 
who has paid much attention to geology, and who wi 
my assertion, so far, at least, as to say: that I have described 
- him several times, and even but a few days since, the speci- 
ns under consideration.”—In a postscript to this letter, Mr. 
O'N eall confirms the statement in regard to the specimens in 
uestion 
; There can be therefore no doubtas to the locality where these 
vegetable remains have been found, or the geological age of the 
strata. The clays of the Lebanon beds are full of Trilobites of 
the same species that abound in the clay beds at the base of the 
Cincinnati group—Calymene senarta. The only question to be 
settled is the true character of the plant which the specimens 
represent. 
s I have said above, there were two fragments of small stems 
or branches, referable to the same kind of vegetable; one, more 
complete, about two inches thick, cylindrical, the whole sub- 
stance transformed into soft gray clay, the bark, or the outer 
surface only, distinctly moulded into clay, as is generally the 
ease in specimens of this kind, and marked by rhomboidal, 
continuous, enlarged bolsters, s surrounding the stem ina spiral, 
bearing at the middle a small oval or rhomboidal sear, less dis- 
tinct, however, though well recognizable, and presenting the 
characters of stems of Sigillaria Serlit Bret. or S. Menardi Brgt. 
The study of the specimens, as far as I was able to do it, left me 
undecided only in regard to their positive reference to ‘the one 
or the other of these two species, on account of the somewhat 
