C 407 ] 
being on the oppofite fide of the mafs con- 
taining the body, could not come in view 
with it at the fame time. 
Fig. 20. The body of the crab, with other parts, 
appearing thro’ the flony matter that inve- 
lopes it, which appears to be an induration 
of yellow clay. 
Fig. 2 1 . feems a long American Phafeolus. Part of 
the petrified hufk is upon it. 
Fig. 22. An American Echinite of the flat kind, 
much refembling that fpecies which Rum- 
phius calls Echinus fulcatus primus. 
Fig. 23. Arijia cujij'dam Graminis. This body has 
all the charadteriftics of an ear of corn, or 
fome fpecies of grafs, of which there are 
many. 
This has been taken for a fpine of an Echi- 
nus : but, as we are to confider its neareft: 
refemblance to whatfoever body, we muff 
conclude it as we have faid. I never faw 
any fpine in the leaf! like it ; but an ear of 
corn, ripe and dry, is as fufceptible of be- 
ing petrified, as a cruftaceous animal, in 
every refpedt. Indeed the fpiculs of the 
ear, each arifing from the grain, being very 
llender, are of courfe destroyed during the 
petrifaction j but the form of the ear is ac- 
tually preferved, as much as the nature and 
circumftances of the thing will allow. 
Fig. a. A manifeft fpecies of Pediculus Marinus 
crumped up. 
b. A Seed-veffel, given me by Mr. Da Cofta, 
found in a clay-pit in Staffordfhire. 
c. Cocculus Indicus. 
LII. 
