28 
HOLDERNESS. 
The nearest situations where this stratum sinks below the marshland, are 
at Hessle and Cottingham. The distance between Hessle and the Block- 
house mill, in a straight line, is between four and five miles ; and as the 
upper plane of the chalk was found in the latter instance ninety-four 
feet deep, whilst at the former point it appears at the surface, the dip 
towards the east is twenty feet per mile. The distance from Hessle to 
Ottringham marsh is nearly fourteen miles, and the declination two 
hundred and twenty-four feet, or sixteen feet per mile. If this mode- 
rate declination be constant, the chalk rock may be reached by wells in 
many parts of Holderness ; and thus, as in similar districts of Lincoln- 
shire, unfailing supplies of water be obtained. 
