144 
BIELBECKS. 
the geological circumstances connected with them were fully ascertained ; 
and made public by a second memoir of Mr. Harcourt, (Philosophical 
Magazine, 1830.) The whole collection of bones, and many of the 
accompanying shells, &c. were subsequently placed in the Yorkshire 
museum by the liberality of the proprietor of the land, W. Worsley, 
Esq. of Hovingham, and there this unique collection is very carefully 
labelled and arranged. 
The following is an epitome of the facts observed and recorded. The 
Market Weigh ton canal passes through a part of those extensive levels 
or flat alluvial tracts which border the tide rivers of Yorkshire, and con- 
sist of silt deposited by the tides and freshes, variously interspersed with 
tracts of peat moor, and accumulations of timber, and divided by insular 
hills and ranges of e hard land.’ From the Humber to the country near 
North Cliff, Market W eighton, and Holme, no exposure of stratified 
rocks is any where observed, nor any very obvious indication of diluvial 
accumulations. The south-eastward base of the gravel hill of Holme 
shews red marl and gypsum, the lower part of the lias appears at North 
Cliff, three miles to the east, and the intermediate country is nearly an 
unbroken flat, a few feet above high-water in the Humber, of sand, 
peat, and silt land, — with an irregular border of chalk and flint and other 
gravel on the east, constituting the very low talus of the lias range of 
North Cliff and Hotham. That nearly the whole is underlaid by the red 
marl and gypsum is evident by the exposure of these substances in the 
Mai’ket Weighton canel, and by the observations to be noticed. 
Two miles south of Market Weighton, and one mile north-west of 
North Cliff, at the edge of a sandy and gravelly warren, in the eastern 
part of the broad level above described, is the solitary farm-house of 
Bielbecks, belonging to Wm. Worsley, Esq. The tenant, Mr. Foster, 
desirous of improving the poor sand land near the house, opened a 
considerable deposit of argillaceous marl, and spread it in great quantities 
on his fields. 
