[ *9 1 
Hearing, yet he could not difcover any manifeft ex- 
ternal Auditory Paffages. 
In fine, from a diligent Inquiry into, and Confider- 
ation of all, that hath been faid from Reafon and 
Experience on both Tides the Queftion, our curious 
Author determines us in favour of the Affirmative 5 
and fays, That Fiffies not only have Organs of Hear- 
ing, but alfo PaiTages, (though they are difficult in 
many Species of them to be demonftrated) by means 
of which a tremulous Motion is communicated to 
thefe Organs. Nor does he think the Water in 
which they live, any Impediment, but rather the Me- 
dium, (or, as he calls it, the Intermedium ) by which 
Sound is communicated to them : As a Man ffiut up 
in one Room, will hear and underhand what is faid 
in another, notwithftanding the Interpofition of a 
Party* wall. 
Our ingenious Author then proceeds to his Effay, 
wherein he confiders what Parts in the Head of Fiffi 
ferve for the Organ of Hearing, and by what Paf- 
fages a tremulous Motion producing this Senfation 
may arrive at them. This Part of his Treatife he 
fiyles, ^De Lapillis> eorumque Numero in Craniis Pi- 
feium. Thefe little Bones , fometimes called OJJicula y 
or little Bones, Mr. Klein looks upon, and accord- 
ingly confiders, as conftituent or effential Parts in the 
Heads of Fifh, and generated with the Brain itfelf. 
They differ (he fays) in Magnitude, according to the 
different Size or Bulk of the Fifh to which they 
refpe&ively belong, and are eafteft to be difeover’d 
in Heads of the Spinofe Kind. 
There are in all kinds of Fiffi three Pair of them 5 
the firft are the two largeft Bones, and are eafily 
enough 
