on the Rome, Watertown and Ogdensburg Railroad was 
built with stone taken from this quarry. The stone at 
the bridge appeared to be of two kinds, a dark variety, 
containing /fucomdes, and showing the concretionary struc- 
ture in a marked degree. These were probably the lower 
layers. Another variety, harder and more compact, be- 
came lighter colored where exposed to the weather. 
At Whiting’s Quarry, near Cicero, this limestone is 
quarried to some extent and used fora building stone. It’ 
is also burned for lime. Geodes are numerous at this 
place. 
Although the Niagara Group is usually quite fossilifer- 
ous, in our county it does not possess that characteristic. 
Fucoides are very abundant; a small Or¢hzs and a Leder- 
ditia are also quite common. Some of the limestone from 
the town of Clay is reported to be oolitic in character, al- 
though I did not find any possessing that characteristic. 
This group is important economically, because it fur- 
nishes a fairly good building stone to a section of the 
county, which would otherwise be lacking in good build- 
ing material. The lime that is obtained from this rock is 
alsoimportant. Itcan be used for all purposes to which 
that article is put, except where a very white lime is re- 
quired. This economic value, however, is limited to that 
region where the outcrop occurs, and is not important 
enough to furnish one of the exports of the county. 
THE SALINA PERIOD. 
The Onondaga Salt Group, as it is sometimes called, is 
attractive to the casual observer as well as to the geolo- 
gist. Its pockets of selenite and its seams of satin spar are 
not only the wonder of our county’s inhabitants, but of all 
its visitors as well. Its immense plaster beds are a wel- 
come factor to such as regard the group merely from a 
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