196 Geological Survey. 
of the work.. Mr. Van Rensselaer insisted upon the to- 
tal exclusion of every thing which savours of any theory.* 
As soon as the engravings are completed you will re- 
ceive acopy. I will here subjoin a few localities of mine- 
rals which | saw in the rocks adjoining the canal; begin- 
ning at the Hudson River, and proceeding westerly. — 
In transition sand rock. Anthracite, sulphuret of lead, 
sulphuret of ziue, green carbonate of cop,er, lamellar sul- 
phate of barytes, quariz crystals with pyramids on each 
end, brown spar, brown hornstone and pearly hornstone, 
large masses of coarse agate, stalactitic quartz, chalcedo- 
ny, and petrosilex. This rock crosses the canal in Flori- 
da, ten miles west of Schenectady; also in Canajoharie, 
and west of the little falls in Herkimer county. Ivrunsin a 
north-east and south-west direction. 
In transition limestone. Numerous petrifactions. Among 
others, three distinct kinds of the trilobite, which M. 
Brongniart seems inclined to place among crustaceous ani- 
mals. One of my assistants, Dr. J. Eights, found a speci- 
men which manifestly exhibits the projecting stripes 
which once supported the eyes, if M. Brovgniart is cor- 
rect in his opinion. ‘This rock every where accompanies 
the before mentioned transition sand rock. 
In millstone grit. Sulphuret of lead and sulphuret of 
zinc, in a quarry in the north-west corner of Westmore- 
land, three miles south of the canal at Rome; also one 
mile east of Vernon village. 
In saliferous rock, or secondary red sandstone and red 
clay slate. Salt springs at frequent intervals from Vernon, to 
thirty miles west of Niagara River; a distance of about 
two hundred and thirty miles. But gypsum is no where 
associated with the salt formation in the state of New-York, - 
nor in Upper Canada, according to the received opinion. 
In ferriferous slate and sand rock. Argillaceous iron ore 
in an uninterrupted stratum or layer, extending from near 
Little Falls to thirty miles beyond Niagara River. Or in 
other words, I feel authorized to report, that there is a sin- 
gle unbroken specimen (stratum or bed? Ed.) of argilla- 
ceous iron ore, two hundred and fifty miles long, and from. 
* Mr. V. R. has consented to my putting this report into the hands of 
booksellers, to be retailed at $1:50 All the money paid for it is to be ap- 
plied to improvements in agriculture. \ A. k. 
° 
