1895. ] NEW YORK ACADEMY OF SCIENCES. 71 
J.F. Kemp and T.G. White, entitled ‘“‘ Additional Notes on the 
Trap Dikes in the Lake Champlain Region,” on account of the 
lateness of the hour was postponed till the next meeting. 
The Academy then adjourned. J. F. Kemp, 
Secretary. 
THE FAUNAS OF THE UPPER ORDOVICIAN STRATA 
AT TRENTON FALLS, ONEIDA COP NN. ¥- 
By TuHeEopore G. Waits, Pu. B., A. M. 
Read December 16th, 1895. 
PLATES II-V. 
CONTENTS. 
‘ PAGE 
Tistopy ofthe tern >\Crenton. Limestone?’ ...2..s.ccc.0 so sas cagaedacnatee cavsemes 71 
Oneinalidescriptions! Of the ty Pe-SCCHON. 2.6.0... .0/<i-00 40100 seio0-co-cineaese caves senase 72 
Stratigraphy of the Trenton Falls section with faunal lists................ 74 
‘« Poland Bridge af oS Se ieee caer 81 
et ‘¢ Poland Limekiln ‘‘ oe of ONT Ath eee eae eeete 82 
oH ‘* Rathbone Brook  “ a nf AS Jo SSE ee 84 
WonGlusiOns: sar. soctessseeeaecsessees tects dace sjosas dail neivsleineles vee oselndaastecsaeioee no ser 87 
SSUAUNA TI AIRY oe ces tela ciate ee oe sls or eicice s sls Ree laos aie Sdlawls a dwissla’s Valeo aies.ciysie sw slowairieteeieiaete optsesietts 88 
Bhysicaliteatunessom the irenton Malls|Sectlon.....--c2-----.0-c5eseenceeeeseseen 89 
List of fossils for which Trenton Falls is the type-locality....................- 91 
AMleyoriauMAs Ol GUC VATIOUS ZONESs. ce saace<cs cess oocs eccsseeeoreccocencensstees 93 
Although the original locality from which the Trenton forma- 
tion derives its name has been so frequently referred to in 
the literature of that series of strata, the writer was unable to 
find a detailed tabulation of the stratigraphy or local geological 
boundaries of the type section, which might be employed as a 
basis of comparison for similar stratigraphic work, now in 
progress, upon the Trenton and adjacent terranes in the Lake 
Champlain valley. 
The first mention of the Trenton Falls locality in the reports 
of the New York State Geological Survey is that by T. A. Con- 
rad in 1837, in his report upon the * Third District,” page 
163, under the heading “The fetid limestone and shales of 
Trenton Falls.” These, he informs us, consist of ‘t dark blue 
limestones and shales, the whole mass probably about four hun- 
dred feet in thickness, composing the summits of most of the 
slopes which descend to the valley of the Mohawk, in Herkimer 
* Prepared in connection with a doctorate thesis upon the “Trenton Formation in 
the Lake Champlain valley, soon to be submitted to the faculty of Columbia Univer- 
sity. 
