ical a NEW YORK ACADEMY OF SCIENCES. 23 
south the ridges are seen to curve around in a semicircle, those 
of the eastern side proving to be continuous with those of the 
western side. It is a very pretty example of a tilted anticlinal 
fold ; the slant in this case being toward the south. Here also, 
at the most northerly point examined, was found the Para- 
strophia horizon, as well marked as at Larrabee Point, seventy- 
eight miles to the southward. The Chazy also yielded some 
fossils. 
Basin Harbor, near Vergennes, was the last locality examined. 
The Chazy is there finely developed. Good trilobites were ob- 
tained, the limestone being full of the minute young of Asaphus. 
Just south of Basin Harbor is Button Bay Island. This small 
island, covering about one acre, is entirely of Black River lime- 
stone. At the lower part of the section is a thin band of lime- 
stone containing myriads of Leperditias in perfect preservation. 
Near the top is a two-foot band, sharply defined above and 
below, and made up entirely of corals of the genera Stromato- 
cerium and Columnaria. It is a most striking example of coral 
reef formation. Just eastward of Button Bay Island is a small 
island of Trenton limestone, from which the last collections 
were made. 
It is expected that the results to be obtained from the work 
will be of considerable importarce in the field of stratigraphic 
paleontology, for the region is a rich one and very little work 
has been done on the New York Ordovician since the publica- 
tion of Hall’s first volume of the Paleontology of New York in 
1847. Accordingly careful work in which the various elements 
of each fauna are dissected out and fixed horizons established 
for a particular region cannot yield other than results of value. 
The paper was discussed by J. F. Kemp. 
The Academy then adjourned. 
J. F. Kemp, 
Secretary. 
The following paper was read by title April 8, 1895, but was 
withheld for revision by its author. The title announced on p. 
185 of Vol. XIV. of the Transactions is “* Petrographical Notes 
on Rocks from Alaska.” 
