386 Hall and Wyman on 
on the farm of Gen. W. H. Adams, of Clyde. The situation 
in which it was found is an elevated plateau or level tract 
of land, a portion only of which would be denominated a 
swamp, though the whole surface is covered with a peaty soil 
which supports a heavy growth of elm, hemlock and ash, with 
some maple and beech. This elevated ground is the summit 
level, from which the waters flow in opposite directions, into 
ake Ontario on the north, and into the Clyde river, and 
thence into the Cayuga and Seneca lake outlets on the south. 
The precise locality of the fossil was near the termination of 
a shallow ravine, or the bed of a small stream, which flows 
into Lake Ontario, in a northeasterly direction. 
The extent of this level tract is about five or six miles, 
while its width, in most parts, is much less. Along nearly its 
entire length a canal of eight or ten feet deep has been exca- 
vated, and in this excavation, about eight feet below the sint 
face, the skull was found, the lower jaw separated some little 
distance from the cranium. 
À section at this place, and at numerous others near the 
same spot, presents the following &haracters : 
1. Muck, or vegetable soil, supporting a heavy growth of 
timber, two feet or more insthickness. 
2. Fine sand, with occasional thin bands of clay, often con- 
sisting of alternating layers of sand, twigs, leaves and other 
fragments of vegetable matter, and much blackened thereby ; 
two to three feet thick. 
3. Muck or peaty soil, composed of decayed fragments of 
wood, bark, leaves, &c., enclosing trunks of trees of large size; 
about four feet thick. 
SKULL or Casrororpes OnI0ENSIS.’ | 
4. Fine sand, with shells of Planorbis, Valvata, Cyclas, &c» 
one to two or three feet thick. f 
5. Ancient drift, with northern bowlders and fragments ° 
the teeth of the 
1 Among the fossil wood above mentioned, were plain marks of be one of that 
beaver, and but for the size of this skull I should have supposed it to 
race. 
