Peg Pe 
been wafhed, is ufually a chalky loam, or, rather, 
a diffolved chalk, (provincially called white land) 
the flatter parts are generally a flinty loam, and the 
center of the vallies, next the rivulets, is ufually a_ 
bed of broken flints, covered with the black earth 
wathed from the hills above; and in fome of thefe, 
there are veins of peat, formed by the black earth 
without any mixture of flints. And it neceflarily 
follows, that thofe parts near the fource of the rivu- 
lets where the hills are the fteepeft, abound, moftly 
with the white land foil, and thofe near the junétion 
of the rivulets, where the country is of courfe flat--_ 
teft, abound moftly with the flinty loam. The 
fides of the hills which have been the moft wafhed, 
are the thinneft and weakeft foil, and the level tops, 
which have been very little wafhed, or not wafhed 
at all, frequently the deepeft and ftrongett. 
But there are fome very fingular fand-veins, run- 
ning through a large portion of this diftrict, which 
deferve particular notice. One very narrow, but 
very fertile vein, enters the county at Mere, on the 
borders of Dorfetfhire, and takes a north and north- 
eaft direCtion round the outfide edge of the Downs, 
keeping nearly clofe to their foot, by way of Maiden- 
Bradley, Warminfter, Weftbury, and Lavington, 
towards. Devizes, where it meets and unites with a 
much wider and ftill more fertile vein, coming 
down the Pewfey Vale from Burbage. 
Another 
