§; N O R F O L K. i^ 



but in diftindt malTes, of different figures 

 and magnitudes, riling with irregular heads 

 toward the furface, and finking to, perhaps, 

 ten, perhaps, twenty feet deep, and fome- 

 times to a depth linfathomed. If the abyfs 

 'bf fand, in which they lie buried, could be 

 rendered tranfpareht, thefe clouds of marl 

 would, I apprehend, be feen fcattered under 

 the furface of this country, in refemblahce 

 bf the clouds of vapour, which we fre^ 

 C|uentlyj in fummer, fee fufpended in the at- 

 mofphere. 



^/6(? general appearance of thefe marls differs, 

 hot only in different beds or " jams ;'* but 

 the fame jam generally affords marl of diife- 

 irent appearances and qualities : the lipjper part is 

 lifually fouler and niore friable, while the lower 

 parts of the jam are of a purer, firmer, moxc 

 chalk-like nature ; and are ufually interfperfed 



with " chalk-ftortes -^^ n^lmelyj lumps of 



'chalk, firm enough to be ufed in writing ; 

 and with flints, fimiUr to thofe ufually found 

 in chalk-pits of other diftricls. 



The fpccimen befbre me was taken from 



l:he middle of a ten-foot jam. The general 



appearance is that of a dirty, rough, friable 



G 2 ci^alk 5 



