C 
Tis with this View, and in order to fet this Mat- 
ter in a clearer Light, the ingenious Author has 
obliged the World with the Book before us. 
It confifts of a Dedication addrefs’d to this Ho- 
nourable Society, a Preface, an EBay, and a double 
Appendix. 
The Preface begins with acquainting us, what he 
means by Fifhes, and defines them fo, as to exclude 
feveral Tribes, that have been commonly taken for 
iuch by the Ant rents. Tifces dicimus Animalia (fays 
he) apoda pinnis natantia j and adds in his Annota- 
tion upon it, Ab hac definitime feclufa fiunt Ser- 
pent turn Genus , pinnis carens , Cancri , Afiaci , T ‘eft a- 
cea ; Cochlea, Conch ave ; imo Amphibia , five Bi- 
peda , {ut Manat i Clufii ) five Quadrupedia , ut Tho- 
ca y&c. 
Mr. Klein then (waving the Confideration of the 
Cetaceous Kind, which are allow’d by mod Authors 
to have both Auditory Paflages, and the Senfe of Hear- 
ing) proceeds to the main Queftion, viz,. Whether 
the Cartilaginous and Spinofe kinds of Fifhes are en- 
dued with the Senfe of Hearing 5 or have any Organs 
or Auditory Paflages for that Purpofe. 
He gives us the Sentiments of the Antients and 
Moderns, by producing a Variety of Quotations, both 
pro and con. out of their Works 5 from whence (fays 
he) it appears, that though fome of them were du- 
bious, yet many of them agree, that Fifhes do hear ; 
neverthele fs, none of them were fully fatisfied, by 
what Part, or Ways, they had this Senfation pro- 
duced. And though ‘Julius Cajfierius Placentinus 
tound out fome little Bones in the Head of the Bike 
or Jack , which he look’d upon to be the Organs of 
Hearing, 
