IO NEW YORK STATE MUSEUM 
the most productive material has been found in the foundations and cellar 
walls of buildings and in one instance the foundation wall of a large barn 
has been removed without disturbing the building, the abstracted rock 
being replaced with concrete as the work proceeded. Many hands have 
helped in the acquisition of this material: Messrs D. D. Luther, 
R. Ruedemann, C. A. Hartnagel, Jacob Van Deloo, H. C. Wardell, Fred 
Braun and the writer, and while it may be difficult at the present to 
greatly enlarge these extensive collections, still they are only an index of 
the profusion of these forms of life in this pool. 
Colony B, or the Buffalo pool, appears to have been quite 
closely confined to the quarry beds of the Buffalo Cement Company in 
the northern part of the city of Buffalo. It is from these quarries that 
the majority of the specimens widespread now through the museums of 
the world, has come. Formerly such specimens were available to any 
collector, but a few years ago the president of the company 
determined to place all specimens uncovered in the progress 
of quarry work in the possession of the Buffalo Society of Natural Sciences 
and by virtue of this laudable act that society possesses in the ‘‘ Bennett 
Collection ' 
’ 
a very remarkable array of these remains, which are specially 
noteworthy for the prevailing large size attained by the individuals. At 
the present time few Eurypterida are obtained from this historic locality 
and there is reason to believe that the boundaries of the pool have been 
approached, though remains of these creatures are found scattered at this 
geological horizon as far west as Bertie, in Ontario, the locality from which 
this waterlime formation takes its name. Like the Herkimer pool, that 
at Buffalo lies in the Bertie waterlime above the salt. 
Colony S, or the Schenectady basin. This recent discovery (1910) 
of eurypterids in the Frankfort shale (Lower Siluric) is comparable to 
their occurrence at Otisville. These remains, usually in fragmentary con- 
dition, abound most freely in fine grained black shale intercalated between 
thick calcareous sandstone beds locally known as “Schenectady blue- 
stone,’ but they also occur in the sandy passage beds between the two. 
