A Letter from Mr. Anthony Leewenhoeck Fellow 
of the Royal Society, ddt. Apr. 1 4. i 6 84. contain- 
ing Obfervations about the Criftallin humor of 
theEyt^isc 
IN m'mtoi September the 7th^\6jA^. I "communicated 
my Obfervations concerning the Criflallin humour of 
the£y^> which I find to have been inferted by Mr. 6?/- 
denburg^ in the PhiL Tranfa^ions Num, 10%. p. 178. where 
Ifay, that the Criftallin Body [ot humour) of the Eye^ is 
in hardneis ranch like a preferved Nutmeg-^ which with 
a l{a^or I cut in too, and fo obferved the fame in parcels, 
and found it to confift of many Orbicular fcaly parts ^ ly- 
ing one on the other, which had their beginnings from 
'the Center j all which parts Gonfifted again of Criftallin 
Globules : And having luffered the faid Criflalliti humor 
to dry for 3 dayes, it became fohard, that in the cutting, 
it broke in pieces: as if it had been hard l^pa^in. And ob- 
ferving again, thefe parts, I found therein, not only the 
aforefaid Orbicular fcaly [ubftance ; but further, that each 
fcale, was again compoled, of other Ring-like parts, and 
that thefe lecond were contrary pofited to the other : 
Thus much I obferved, on the Criftallin part of the Eye ^ to 
which, I add, that I compared the fcaly parts to a Globe, 
made out of a number of thin papers, lay'd the one on 
the other> and that every paper or fcale^ was again con- 
ftituted out of fo many parts, as there may be lines drawn 
upon a Globe^ reaching from one Pole to the other. 
Ihavefometimefince, again made leveral obfervati- 
ons, concerning the ^y^j* of 2LXidi Corvs for that of- 
ten fince my firfl: obf ervations, I have thought, that I had 
not yet dilcovered the make of the Criftallin humor of 
th€Eye^ fo thoroughly as I might have done. 
