4iO 
GEOLOGY OF THE SECOND DISTRICT. 
115. 
Ferfaration of granite near Oxbow, from a drawing by E. E.mmons, Jr. 
Distribution of Drift and Boulders, &c. 
The facts in relation to the distribution of drift and boulders have been in part anticipated. 
The same causes which have grooved the surface in many places so deeply, have also been 
instrumental in the dispersion of the boulders and loose materials over the surface. 
In this county, as in others, boulders are found in particular sections or districts. They 
are not, as might be inferred from the remarks sometimes loosely made, spread over the 
whole surface without regard to its level; they are, on the contrary, arranged in zones, the 
greatest number being found in the higher parts of certain districts. It is true, that they 
are found almost every where ; but by these remarks, it is to be understood that they are far 
more numerous in some districts than others, and that this is a result which is uniform, and 
may be connected in each instance with one cause. 
In Jefferson, the zone of boulders, or the boulder region, is about two hundred or two hun¬ 
dred and fifty feet above the level of Lake Ontario. I may err in this statement, as it regards 
the approximate height; but it is not far from the truth. Boulders are scattered over the 
southern parts of the county. Upon the lake shore, granite, gneiss, hypersthene and horn¬ 
blende compose the principal ones. The same kinds, also, are found between Henderson 
and Adams, and in the vicinity of Champion and Carthage. 
But the region in which the boulders are gi'eatly multiplied, is that upon the slope of the 
range of hills south of Watertown, and extending in an irregular band or zone of the same 
