202 
GEOLOGY OF THE THIRD DISTRICT. 
Ludlowville is a highly favorable point for the examination of the masses 1, 2, 3, the village 
being placed in the centre of them; and were they grouped together, no name could designate 
them more appropriately than that of the village itself; and its interest is greatly increased 
by the undoubted fact that the two lower, if not all three, belong to the Ludlowville group of 
the British Silurian system, names which we would gladly adopt, were not those which we use, 
more accordant with the facts of the geology of this State, where the limits are better defined ; 
and besides there is an absolute necessity for independence when investigating any subject not 
settled, or which is new, for the mind cannot attain to truth unless wholly untrammelled. 
The Ithaca, Chemung and Catskill groups, having no precise lines of division between them, 
cannot so well be illustrated by such small engravings, and are therefore not given. They 
occupy large areas, and the sections on the map are referred to as substitutes for these smaller 
ones. 
