1242 ) 
%ingGlaifes. It is far from my defign to Difcommend 
any. (brt of Microfcopes now in Ufe, or to recommend 
diofe I make, any further .than they are found Ufeful by 
rhofe I nquifirive Gentlemen who are pleas'd to have Them 
of rac. 
This of Microfcopes has Eigk different Magnif/wg 
Glajfes 5 feven of which maj be TJfedy with two different 
Injirummts, for the better applying Them to various Ob- 
jeds : One of thefe Inurnment s is reprefented Fig, i. 
A A A, and is made of Ivory, it hath 3 thinBrafs PJats, 
E, E, and a Spring of Brafs H within it ^ to one of the 
thin Plats of Brafs is fixed a piece of Cork F, with a con- 
cavity G both in the Cork and Brafs to which it is 
afEx'd : In one end of this Inftrument there is a long Screw, 
D; with a Clafs, C, fcrewed in the end of it: In the 
other end; there is a hollow Screw, o d, wherein any of 
the Magnifying glalTes are fcrewed when they are to be 
made ule of. The 8 different Magnifying glalTes are all fet 
in Ivory, 7 of which are fet in the manner of Fig. I\^. 
n. 4. The greatefi: Magnifier is marked upon the Ivory 
wherein it. is fet with n. j, the .next n 2, and fo on till 
n. 7 ; The 8th Glafs is not marked, but fet in the manner- 
of a little Barrel Box of lyory, as in Fig. II. 
E E a flat pece of Ivory ^ whereof there are 8 belonging 
to this let of Microfcopes, ( tho any one who has a mind 
to keep a Regifter of Objefts may have as many of them as. 
he pleafes ) in each of which there are 3. holes f f f, where-- 
in 5 or more obj-fts are placed between two thin GlafTes, 
or Talks,' when to be ufed vvifli the greater Magnifyers. 
, The other Inftrunient Fig- III. is made of Brafs or Prince's 
Meta), with Joynts pppp, to turn eafily any way with a 
Inull pair oi Tongs-G G, which open at the points k, by 
^])reffing together the two heads of the Pins I I for taking . 
up of Objefts : There's a round.piece of Ivory, H, fcrewed 
lipon the other end of the Tongs,, white on the one fide 
lor black objcds that arc opake Sadies 5 ( fucli as Seeds or. 
Sands). 
