378 Miscellanies. 
and a half \ong, and five inches in diameter, and as it belonged near 
the middle part of the tusk, the whole was of great size and near 
the root was probably eight inches in diameter. The large piece 
and many fragments.are now in the possession of Mr. Butler, the en- 
terprising proprietor of the museum in this city. 
These fossils were found April 2d, 1833, in excavating the earth 
for the passage of water at a saw-mill. It is said that there were no 
indications of other bones or teeth. About twenty years before, a 
thigh bone of some huge animal was found in removing the earth a 
few rods below in the same bank. The whole probably belonged 
to the same animal, and more may yet be discovered on further re- 
moval of the earth, The thigh bone is said to be in the possession 
of a gentleman in an adjoining town to Perinton, but I have not been 
able to discover it. The tusk lay about four feet below the surface, 
and partly under the stump of a large forest tree. The place was 
covered with forest a few years ago; I have conversed with several 
individuals who were at the place, and knew the circumstances, and 
have examined the remains in the museum. There can be no doubt 
about the character of these remains and that they had been buried 
for centuries in the earth. The place is in the road, at the Irondi- 
quot creek, a little distance from the place called Fullum’s Basin, 
perhaps ten miles from Lake Ontario. 
The geological relations of these fossils next merits attention. la 
this case there is no uncertainty. The Irondiquot creek is nearly 
on a level with Lake Ontario for four or five miles, and at this place, 
perhaps from the lake, is not more than fifty or eighty feet above it. 
The banks of the creek are sand thrown up into hillocks and sloping 
sides, from twenty to more than a hundred feet high; the sand being 
spread over a large extent of the country. The formation is evi- 
dently diluvial, resting on the transition rocks of this section. In 
various places the ground, coarse and fine, is mingled with this sand, 
and boulders of the primitive rocks brought from a region far at the 
north. On the surface we find the erratic group, in boulders of 
granite, gneiss, mica slate, hornblende rock, and quartz. These 
boulders are of various magnitudes. Some of them are large rocks, 
weighing many tons, and showing manifest evidences of the grinding 
power of sand and water, by which they were rounded. The Irondi- 
quot runs nearly parallel to the Genesee, but is much lower, as the 
canal descends from the Genesee by several locks and then crosses 
the ba by. the great embankment of eighty feet above the 
