CLARK : GLACIAL SECTIONS. 
Fig. 2) it is remarkably broken. There is a central mass of pure 
sand, quite angular in shape when first seen. On the E. side rest 
stones at a steep angle. Exposure had sadly reduced the angular- 
ity before the photograph could be taken, and now the mass, 
which barely penetrated a foot into the bank, has gone. To all 
appearances it had fallen as a solid, frozen lump ; for the nature of 
the surrounding beds indicate depositon from above as their source. 
Several other most interesting sections were made in the 
neighbourhood, the most important being a long line of contorted 
beds, dislosed at the rear of the Passenger Station (Plate XXIII., 
Fig. 1, B). Near the N.E. end were gravel beds like those of 
Photo. VI., apparently among the boulder clays. They included 
sands excessively false bedded, a condition which occurred again 
further on. Thirteen beds were counted in a space of 3 feet by 
1^ feet. A section taken at another point shows 14 sets in a 
rectangle of three feet by two. 
Space forbids more than the barest mention of the stones 
brought together, even on the small area of the Goods Station. 
Shap granite, though ubiquitous, is not abundant. Lake stone 
(a volcanite breccia), slate, and basalts must be voyageurs 
from a distance ; but of course the Carboniferous beds from the 
West Riding supply the greater number. Indeed, these beds 
form in consequence a successful hunting ground for the young- 
geologists of the Friends' School, to some of whom I am indebted 
for polished corals, encrinites, and agate. 
All these have drifted from the west, but from every spot 
mentioned evidence has been forthcoming, from the presence of 
Liassic Grypheas and various fossils of the Inferior Oolite, that 
the stream, at times, was reversed, pouring upon the plain of 
York contributions from its eastern margin. As yet in no case 
have chalk fossils been detected ; hence any drift from the east 
appears to have a southerly set. South of York, according to 
Professor Phillips, the glacial beds frequently include Cretaceous 
remains. 
