84 THE HAMILTON ASSOCIATION. 
““Medina series.” A good many years ago a stone cutter 
pointed out to me a Favosites which his chisel revealed (to his 
intense disgust, as it ruined the slab intended for some orna- 
mental purpose). 
CLINTON ROCKS. 
In order to get at the Medina sandstone, a considerable 
amount of Clinton shale overlying must be removed. This 
material after some exposure to the weather proved highly 
fossiliferous. Formerly the rubbish heaps extending from the 
foot of the Jolly Cut road to some distance beyond, were well. 
known hunting grounds to the late Professor Wright, Mr. 
A. E. Walker, and the writer. Although much depends on the 
alleged re-opening of the sandstone (Medina quarries), more or 
less of the Clinton beds overlying are brought down annually by 
frost, heavy rains, etc., in minor landslips. | During the past 
summer a Crinoid was obtained form this debris, in addition 
to a few fine lower Clinton slabs, containing Hall’s Brachiopod 
Lingula Oblata, which occurs in one of the layers holding the 
well-known Fucoid Buthotrephis Gracilis, and varieties which 
may be looked upon yet as detached lower branches of the 
plant. Some few years previously the scattered plates of a 
starfish (derived from the iron band probably) put in an appear- 
ance in some shale which had fallen from an old quarry close to 
the eastern incline. The material near its foot (derived from 
Clinton beds, although insufficiently weathered) when examined 
during the past autumn displayed a few fossiliferous slabs. 
The same may be said also of a rubbish heap, removed from 
a quarry recently re-opened for a short time close beside it. 
The peculiar marking on the edge of the flags, which indicated 
the presence of Fucoidal remains in the interior, requires 
close attention. This may be noticed at several points along 
the old quarries, and owing to the sloping banks of shale, one 
may easily reach these z7 sz¢tu, but their removal from thence, 
unfortunately, is no easy matter, as it entails much patience and 
hard work to displace the layers above them. When the 
upper reservoir above Judge Robertson’s was constructed, by a 
