warp] TRIASSIC FLORA OF YORK COUNTY, PENNSYLVANIA. 233 
his entire collection of fossil plants, to Professor Fontaine for thorough 
revision, and for a report upon them, including such notes and sugges- 
tions as he should deem of interest. This was done, and the work was 
completed about the middle of June. The collection proved of special 
interest, coming as it does from this wholly new region of the Trias, 
and, as might have been expected, it contained a number of new species 
ai hitherto unknown plants, besides several not heretofore found in 
American deposits. 
In editing the manuscripts of ‘the two authors I have aimed to give 
the fullest possible expression to the views of both. Professor Fon- 
taine’s long experience and extensive researches in this group render 
him the recognized authority, and Mr. Wanner fully acknowledges this. 
His determinations are therefore accepted as final by all concerned, 
and will be embodied in the following systematic treatment of the 
plants. Mr. Wanner’s notes, however, as the collector and original 
investigator of the material, are of the utmost value and are also 
embodied as nearly in his own language as accords with Professor 
Fontaine’s determinations. His figures are used as finished up by 
himself, but to them Professor Fontaine has added a number, and in 
a few cases has redrawn the same specimens to emphasize his own 
interpretation of their characters. The joint result may be put into 
the following form: 
TRIASSIC FLORA. OF YORK COUNTY, PENNSYLVANIA. 
By ATREUS WANNER and WILLIAM M. FONTAINE. 
INTRODUCTORY REMARKS BY MR. WANNER, 
For a number of years the writer, as opportunity permitted, has 
been exploring the Trias of York County. Encouraged by discov- 
eries made elsewhere, and impelled by an inherent love of geological 
study and investigation, he has collected enough material to warrant 
its presentation. It is a report of progress. 
So far as the writer knows, no one else’ has discovered or reported 
1§ince the preparation of this report, but prior to its publication, and at the time of its presentation 
to Hon. Charles D. Walcott, I received a thesis on A Study of the Igneous Rocks of York Haven and 
Stony Brook, Pennsylvania, and their accompanying formations, by Frederick Ehrenfeld. 
On pages 10 and 11 the author names the following fossils which he found near York Haven: 
Macroteniopteris magnifolia. 
Cheirolepis Muensteri. 
Baiera Muensteriana. 
Loperia simplex = Bambusium Font. 
Mertensides bullatus ? 
Equisetum——? 
Mr. Ehrenfeld had no knowledge of the fact that I had previously found fossils at the York Haven 
locality and had in preparation the report now submitted, for which reason to him also must be 
given the credit of having discovered fossil plants at that locality, and the further credit of hav- 
ing first published his report. 
Mr. Ehrenfeld’s thesis was received by me on April 10, 1899, and my report was presented to Hon. 
Charles D. Walcott on April 15, 1899. 
As I understand the facts, the work of each has been unknown to and independent of that of the 
other. 
