The K<()Jie-Mon(ine of Huchesfer, X. )'.— Fa irchild . 48 
of the Pinnacle. The tlnnkinfir riilges and knobs along the 
north side are mostly till, and one till ridge is fo\ind with 
east and west direction upon the south side of the range at 
South avenue. Gravelly till is abundant along South avenue 
and in Highland park. Huge blocks of Niagara limestone 
abound upon the Pinnacle summit and in many other places, 
and occur in prodigious numbers in the till covering Cobb's 
hill, mostly angular, although many are heavily scored and 
striated. The till is probably sufficient in amount to consti- 
tute alone a distinct moraine. 
The greater mass of material is sand and gravel, of all 
sizes up to large cobbles, and of every admixture. The coarser 
material is not well assorted and the stratification is usually 
obscure, except in the mass and in a distant or general view. 
More than one-half of the coarser material is Medina sand- 
stone, which also constitiites the mass of the sand and gives 
a reddish color to even the finer sand and silt. 
In a broad way it may be said that the coarser materials 
prevail at the eastern end of the range and finer gravel and 
sand at the western end; but there are ncjtable exceptions. 
The large pit in the heart of the north ridge near Brighton is 
mainly sand and silt. The great pit on the south side of the 
"Pinnacle," reaching almost to the very core of the hill and 
exposing a full 100 feet vertical section, is nearly all fine 
gravel. At South Goodman street the cutting for the grade, 
with the deep sewer tunnel below, shows fine sand and silt, 
with only thin leaves of fine gravel, to a depth of 72 feet. In 
Mt. Hope cemetery heavy gravel beds occur, while tiie low 
point near the river, cut b}'^ the railroad, is chiefly till with a 
jumbled mixture of sand and silt. It is the general rule that 
the coarser beds are upon the northern side of the hills, while 
the southern side is usually fine sand horizontally lieddcd and 
undisturbed. 
The dip of the beds is not westward iu)r lengthwise of tlie 
hill range, nor is it away from a median line, as would l)e the 
case if the range were an esker, but generally southward and 
east of south, or across the trend line. This soutiiward dip is 
most pronounced in the gravels upon tlie north side of the 
hills. At the extreme east end, near Brighton, the gravel dips 
in several directions from the end of the ridge. In the huge 
