durability, its resistance of pressure, of atmospheric agen- 
cies, etc., etc., has gained a national reputation extending 
through half a century, is at present only a matter of con- 
jecture. 
A few of the structures built of this limestone are: 
the new Cathedrals of St. Paul and St. Mary, the new 
Government Building and the new City Hall. Of those 
which have stood the storms of a quarter of a century we 
mention the Court House, the Onondaga County Savings 
Bank, and the Hall of Languages of Syracuse University. 
The continual and growing demand for the Onondaga 
Limestone, and the many large public buildings that are 
being constructed of it, are ample evidences of its contin- 
ued popularity. 
As many of the layers are very fossiliferous, if these 
be taken, ground smooth and polished, not only will the 
fossils first seen be brought out more clearly, but others, 
which were at first invisible, will be distinctly brought to 
view. When burned this rock furnishes an extremely 
pure white lime. Formerly it was burned in large quan- 
tities for this purpose, and always brought a price largely 
in advance of the amount paid for the ordinary article. 
For a number of years past, however, this industry has 
not been carried on very extensively. This is probably 
due to the fact that this particular rock brings more money 
with less trouble as a building stone than as lime. 
Although this group is abundant in fossils, none of 
them are limited to it alone, but are distributed through- 
out the entire period. We will, therefore, leave the dis- 
cussion of its fossils until we speak of those of the entire 
period. 
This group can be easily studied at Split Rock Quarry, 
five miles southwest of Syracuse; at the Indian Reserva- 
tion, six miles south of the city; at the Glenside Mills, 
Skaneateles; at the quarries north of Skaneateles Falls; 
28 
