( ) 
compofedo lay fo very thin upon one another, making 
thereby fuch exceeding fine Scales, that Jay fo prodigi^ 
oufly thick upon one another that it was amazing to 
behold 5 and this Fibrous Subftance is thinner of Parti- 
cles, than that of a Pearch not a year old. 
The reafon why the Fibrous matter of th^ Criftaline 
Humour of a fmall Pearch appears Thicker than that in a 
Whale, is, that we fee the former on one fide, wliei e 
the Threads or Fibres are thickefr, but if we view then!, 
where the Fibrous Particles meet together they are ex- 
ceeding fine or flender 5 whereas, on the contrary, the 
Fibrous Matter of the Whaje not meeting together, but 
running by, by Croffing itfelf often, is of the fame thick*^ 
nefs throughout. 
In my Letter of the 14th of Aprils 1684, to the Ho 
norable Society, I imparted my Difcoveries about the 
Griftaline Humor of an Ox, Fiih, &c. and particularly 
I communicated the Courfe of the Fibrous Matter in the 
faid Humor 5 and I have difcover'd that the Criftallin 
Humor in a Whale is ot a quite different Texture or 
Circumvolution from the Fibrous Matter in many Crea- 
tures 3 for whereas the faid Humor in others confifts of 
three particular conjoyn^d Branches, all arifing out of 
one Point, the fame Humor in the Eye of a Whale is 
compofed of five Circumvolutions, all which unite toge- 
ther in one Point, and make one Scale : But I muft here 
caution you that I only fpcak of the half of that Orb of 
the Griftaline Humor which fell immediately under my 
obfervation. 
Now to defcribe the Smallnefs, as well as the Fibrous 
Contexture of which fuch a Scale confifts, and whereof 
many lying upon one another compofe the CriftalineHu» 
raour, I caus'd one of cm to be defign'd. 
Fig. 2. CDEF fhews a fmall Particle of the Grifta- 
line Humor of a Whale's Eye, taken off from the Globu- 
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