UPLIFTS OF THE MOHAWK. 207 
about eighty feet above the river. At a little lower level is the blue clay, in parts covered 
with earth and rolled stones. 
The facts make it evident that the south end of the mass has also been raised, but not 
wholly, as the uplift appears on the south side of the river. Opposite to Lower St. Johns- 
ville, and on the hill east of the quarry of birdseye limestone, the calciferous rises to the 
height of forty or fifty feet above a brook to the east, in the bottom of whichis the Utica 
slate, with the Trenton limestone at a lower level. Thus far there is coincidence with the 
uplifts generally, but non-conformity and obscurity in the details, requiring more extended 
observations to make the whole intelligible. The slate and limestone in the brook dip with a 
curve to the northwest and west; the slate reappearing again in the brook at the lower level, 
and at a higher angle. The range of the calciferous cliff was not ascertained, and the space 
between the rocks of the brook and the cliff was covered with soil. At the time of noting 
the facts, the required data were supposed to have been obtained, but prove to be insufficient. 
About the half of a mile above Mindenville, the Utica slate reappears near the river; its 
surface flat, showing the termination of the fifth uplift. 
The sixth uplift is on East-Canada creek, and extends from the south side of the river at 
Manheim ferry, for a few miles above the falls. Though small, it is the most interesting, 
being the best defined. 
69. 
No. 1. Calciferous group. No. 2. Dike and vein of lead ore. No. 3. Trenton limestone. No. 4. Utica slate. 
The Calciferous group forms the left ascending bank, appearing like a low wall near the 
bridge; increasing in height up the creek; forming the falls; rising on the right bank to 
the height of fifty and more feet above the falls, and about thirty on its lower or southern side, 
the latter ranging about north twenty degrees east. The Utica slate forms, on the contrary, 
the right bank of the creek, appearing near the bridge on the same level with the calciferous ; 
its layers equally flat, and continues in that position up the creek, until near the wall of the 
calciferous ; there the layers gracefully curve upwards to the uplifted mass, as in the wood- 
cut annexed. 
