2 q 8 Of the pearled Eyes of Infe&s. . 
(wo Eyes of a Drone , viz. feven thoufand 
in each Eye. Mr. Leeu#enhoek reckoned 
0 t thoufand two hundred thirty-'fix in a 
Silk-Worm $ two Eyes when in its Fly-State; 
three thoufand one hundred eighty-one in 
each Eye of a Beetle ; and eight thoufand 
in the two Eyes of a common Fly. The 
JLibepd; Adder-Bolt , of Dragon-Fly , is the 
ihoft remarkable of all the In Eds we know 
for its large and fine pearled Eyes ; which, 
even with a common Readirig-glafs, appear 
like the Skin we call Shagreen. Mr. Leeu¬ 
wenhoek reckons in each Eye of this 
Creature twelve thoufand five hundred forty- 
four Lenfes , of, in both, twenty-five thou- 
fand eighty-eight; placed in an hexangular, 
Pofition, each Lens having fix others round 
it; which is alfo the Order mold common 
in other Eyes. Ele like wife obferved in the 
Center of each Lens a minute tranfparent 
Spot, brighter than the reft, and fuppofed to 
be the Pupil through which the Rays of 
Light are tranfmitted upon the Retina. This 
Spot had three Circles furrounding it, and 
feemed feven Times lefs than the Diameter 
of the whole Lens . We fee here, in each of 
thefe exceedingly minute lenticular Surfaces , 
as much Accuracy in the Figure and Polifh f 
and as much Contrivance and Beauty, as in 
tile Eye of a Whale or an Elephant: and 
how delicate, how exquifitely delicate, mu ft 
the Filaments of the Retina be which ferve 
to 
