OF THE FORTH DISTRICT. 
4S1 
Clean small sand. 
Large gravel. 
Sharp large-grained sand. Sp. No. 10. 
Ai', Sand and clayey sand-belts. 
I, Clean small gravel. 
Fig. 4. To right of preceding, at transition into tilly earths 
a, Sand. 
5, Gravel, 
c, Gravel. 
Gravel. 
Fig. 5. To right of precedingo 
«5 Sand and gravel. 
5, 5, Gravel and sand, 
c, Sharp sand, 
c?, Fine sand. 
Eastward from this point there are similar knolls of gra- 
vel, on both sides of the Edinburgh road, for some miles 
beyond Falkirk : Likewise on the opposite margin of the 
valley, along the foot of the Ochil Hills. 
Sp. 11. & IS.—- The sand-pits of Carron Company are 
of considerable dimensions. The following is a sketch of 
pit west of Carron-House, depth 10 feet. 
Fig. 6. 
a, Small gravel and sand, with coal, grains size of a pea 
to an inch. 
h, Sp. No. 11. 
c, Sp. No. IS. 
To the west it passes into fine blue clay ; which again 
passes into dark-blue till<) a compact gravelly clay, described 
in the paper already referred to. North of Carron-House 
is a large pit ; the upper stratum contains semicircular 
curved lines ; open side uppermost ; diameter 5 feet, pass- 
