398 ESTATES.

the lower end, or base, somewhat rounding. The length about a foot, and the width, at the base, the same. The whole is hollow, as a ridge tile: the depth of the hollow, at the base, being three inches: with a nail hole, near the upper point.

DRINKING POOLS are formed, on these hills, with cHaALK and LIME; and in some instances, are fed artificially, as in YorkKsuire. But not in the regular and systematic manner, which is there praticed. No instance of practice fell under my ob- servation. But the outlines of the method which is followed, on the hills of Surrey; I understand, from good information, are these.|

The bason being formed, agreeably to the situation, and the intention, it is bot- tomed, or lined, with a coat of chalk, six or eight inches thick. This being beaten with rammers, so as to give it a degree of firm- ness, and smoothness, a grout, or batter, of pounded chalk, and lime hot from the kiln, is prepared, and spread regularly over the surface of the chalk; covering it, perhaps, half an inch thick. When the first coat of cement is suficiently dry, another(and per- haps another) is added. Thus closing the pores of the chalk, and glazing the bottom of the bason; so as to make it perfectly tight; and, at the same time, effectually preventing the mischiefs of earth worms.