( ^74 ) 
from Nov. 24. i6%6. to the fame Day 
1687. IV. De Figurarnm Ceometrice ir^ 
rationalium QnadratHris. Antore Johanne 
Craig- V. Fart of a Letter of Mr. Ro- 
bert Tredwey , to Dr. Leonard Pluke- 
net, D^f^iaf Jamaica > Vth. 11.169^^, giving 
an Account of a great piece of Amber^ 
griefe thrown on that Ijland ; with the Opinion 
of fome there about the way of its FroduSlion. 
1. An Account of the Tongue of a Paftinaca Ma- 
rina, frequent in the Seas about JzimiCdiy and 
lately dug up in Mary-Land, and England. 
By Hans Sloane. M. D. 
DR. Tancred Robinjon, Fellow of the College of Phy- 
fitians and Royal Society, did me the favour fome 
time fince; to fliow me a confiderable number of 
Foffil Bones and Shells of feveral forts he had latley 
come to his hands from Mary-Land. Some of them 
had received little alteration in the Earth, others more, 
and fome were fo changed as to be ftony, but all of 
them retain'd their ancient fbape fo well, that it was 
eafie for any body, who remembred the Figures of the 
parts of thofe Animals, to conclude tbefe Foffils muft 
have come from the fame Original. 
One of thefe Foffil$ (of which I never remembred to 
have feen any before except a little piece with Mr. Pe» 
tiver) I had the favour of the Doftor to carry home 
with me to compare with the Tongue of a Filh I had 
obferv'd 
! 
