[ ] 
when called to be fed, as Mr. Bradley tells us he 
law the Carps do in the Pond of one Mr. Eden at 
Rotterdam ; and their flying away from the Hallo- 
ing and Noifes made by Sailors, as JVolfgangus re- 
ports the Dolphins do, when the Sailors have a Mind 
to fright them. But may we not as reafonably 
imagine thefe Dolphins fly from the Sailors, their 
Ships and Boars, on account of the violent Action 
wherewith fuch Halloings ufually are performed, 
as merely on account of the Noife they make? 
And in the other Cafes, is it not as probable, 
that the Fifh in Ponds, either by their Sight or 
Feeling, difcover'd the Approach of their Benefac- 
tors, whofe coming they were accuftomed to ex- 
ped, as that they were fenfible of their Voices call- 
ing them ? 
I have often flruck with my Thumb-Nail againft 
the Edge of a glafs Jar, in which I kept two Ruffs, 
a Stroke not harder than the Beat of a Pulfe, which 
would caufe them in a Moment to dart from the 
Bottom of the Jar to the Top ; tho’ I am fure they 
did not fee me. But if I made the fame Motion with- 
out hitting the Glafs, or if I made an hundred times 
louder Noifes than the linking of my Nail againfl 
the Glafs, at a very fmall Diftance from it, I could 
not perceive they were in the leaft affeded thereby; 
which, if duly confider'd, may I think amount to a 
Proof of the Deafnefs or Want of Hearing in this 
kind of Fifh at leaft ; and that their delicate Scnfeof 
Feeling fupplies them with the Knowledge of the 
Motions of Bodies, when their other Senfes fail. 
Indeed I have often been convinced by Experiment, 
that their Feeling is exceedingly acute, perhaps more 
fo than in other Animals 5 whence 1 have been led 
to 
