184 MINERAL PRODUCTS. 



trade is carried on at Hessle. The coralline oolite is burnt about Seamer, 

 Ay ton, Pickering, and Malton ; and the Bath oolite at Hawsker, May- 

 becks, Commondale, Scugdale, Coxwold, Newborough Park, Brandsby, 

 Westow, Sancton, Ellerker, &c. The lime from the oolites is less pure 

 than that from the chalk, but all kinds are used in agriculture as well 

 as for building. 



BRICKS are very generally used in Holderness and the vale of York, 

 where the diluvial clay is an abundant and suitable material, and in 

 Cleveland, where the lias clays furnish an additional supply. In the 

 moorland valleys the shales might be employed for the same purposes, if 

 the prevalence of sandstone did not render it unnecessary. 



The nodules and layers of FLINT which occur in the chalk of the 

 Wolds might be of value in the neighbourhood of potteries, but at pre- 

 sent compose excellent materials for the roads. The basaltic dyke, the 

 Bath oolite, slaty stone of Brandsby, and coral bed of the Pickering oolite, 

 furnish very good stone for this use, and, in their absence, Holderness 

 and the vale of York yield plenty of waterworn gravel. 



Excepting limestone, the AGRICULTURIST employs none of the 

 mineral productions of the eastern part of Yorkshire as manure. Pos- 

 sibly some varieties of the red and white marls near the mouth of the 

 Tees, might be available in this respect, as they are in the midland 

 counties. In Holderness, the shell marl so generally found beneath the 

 lacustrine deposits of peat, might, perhaps, be found useful if spread on 

 the pastures; but it could hardly fail to produce excellent effects if 

 spread upon the peat itself, in the mode adopted in the northern part of 

 Lancashire. If this suggestion should be found correct, considerable 

 benefit would result from the practice, for many such peaty hollows 

 exist in the interior of Holderness, which can neither be obliterated by 

 a covering of warp, nor corrected by ordinary industry. 



