made ufe of the fimilitude of a Pit.vsrhere 
k Man can hardly make a fight eftimate 
of the labour & time of drawing cheiicej 
but by having adtualiy clrawn up the 
things in it 5 for as much as the number 
and plenty of the latent Veins leave it 
Very uncertain, what ftorc ther6 is of 
the fubterraneous matter. 
You will not vs^onder therefore, iMofi 
Serene trince^ if for above a whole Years 
times I have almofl: every Day faid, that 
that Difquifition, which was occafion^ 
cd by the Confiderations upon the Teetk 
of a Canis Carchariuiy * was nearly fi- 
hiHYd. For having once or twice leen 
thole Grounds, out of which are digg'd 
up 5^///,and fuch like other things caH: 
out by the Sea, and found, that thofe 
Earths were the Sedimefits of a turbid 
Sea, and that every where We might e * 
fi;imate the number of times, how often’ 
the Sea had been troubled here and there,- 
I haffily not only imagined by my felf, 
A Sharks ftjh ; concerning which this Author 
publifliCd a Difeourfe in his Defpnftion 
Mufclei', of which an Account was given’ 
No. 3 2,'of the fhii. TrdnfaSl. p, C37, 
B biit 
