Royal Society. 491 
parts will putrify and come to nothings but thefe canals will 
remain entire, and as firm, and folid, as they were before. 
FoiTile-ihells and Fillies /// Lincolnfhire 5 by Mr. Abraham 
de la Pryme. Phil. Tranf. N^ z66, p. ^78. 
IN a quarry at the eaft-end of Sroughton in Zincolnfotre, is 
found a clayey lubftance, or earth, that lies under the flone, 
in which are innumerable fragments of (liells of fiih of .various 
Ibrts- viz. TeBlnites, Ecbini, Conchltes, and others, with 
fome pieces of cornel ; and there are lometimes found entire fhell- 
fiih with their natural (hells on, in their native colours, yet 
cracked, bruifed and broken, and fome totally fqueezed flat by 
the weight of the earth 3 that according to M. de la ^Pryim, llill 
lies, and was call upon them at the deluge : There is another 
quarry in the field on the Ibuth-fide of the town, of a hard blue 
iione, which was certainly a pure fine blue clay, in fome antede- 
luvian lake 5 amongft the ilones of many of which are innumer- 
able petrified fliell-fi{h of various forts, but lb united to the 
ftone, that it is very difficult to take them out whole, and he al- 
ways found that they lay in the luperficies of the quarry, within 
a foot of the top, and few or none deeper 5 in leveral places of 
the furface of the quarry (which looks rugged and drifted, as 
inow does after a ftorm) there are feveral Ihell-fiili, half in and 
half out of the ftone^ that part, which is within the quarry, is 
entire and whole, but a hard ftone , and that part which is with- 
out, which the petrifying effluvia did not touch, is confumed and 
gone, all but a little of the edges, which are plain flielJ, and 
have all the Radii and Strice, that the fliells of thofe lorts of 
fi/hes commonly have : All thefe fifli have their fliells on j fome 
of which are exceeding thin, to what others are ; fometimes the 
fhells are in their petrifaction fo thoroughly united and incorpo- 
rated with the ftone, that they are Icarce vifible 5 others in the 
fame quarry have a thick white ihell petrified, but not incorpo- 
rated and turned into the fubflance of the bed, in which they 
lie 5 in getting out the fifh, all the fhell fticks fo faft to the rock, 
that moft commonly it is left behind j but fometimes the fliell 
cleaves in two, one half of the fliell on both fides of the fifh 
fl-ick thereto, and the other half to both fides of the bed 5 but 
others are brought out by lying in the air in frofty nights, with 
the whole natural fhell on, and the Radii or Strias very exad 5 
there are other fi flies here, that have a fmooth black Jhell on, 
with leveral Strice^ but no Radii^ very like, if not the fame 
with the Concha Nigra RomkL 
Q^q q z U^ de 
