fhe Double Reflecting Microfcope . 2 I 
A little Ivory round Box 5. to hold Pieces 
of Ifinglafs for the Sliders." 
6. a fmall Hair Brufh, to wipe any Dull 
off the Glafs, or to apply a Drop of any 
Diquid. 
7. A Pair of Nippers, to take up any Ob¬ 
ject to he examined. 
The two Microfcopes I foall defcribe 
next, viz. the Solar, or Camera Ob four a 
Microfcope, and the Microflcope for Opake 
ObjeCls, are of a foreign Invention, and but 
lately known to us. We are, indeed, 
obliged for them both to a Gentleman of 
Rruflia , the ingenious Dr. Liberkhun, 
who, when he was in England, in the Year 
1740, fhewed an Apparatus for each of 
thefe Purpofes to feveral Gentlemen of the 
Royal Society, and alfo to fome Opticians; 
amongfc whom, Mr. Cuff, againft Ser r 
jeanfs Inn Gate, in Fleet-Street, has taken 
great Pains to improve and bring them to 
Perfection : and therefore I fliall give a 
Pefcriptiorj, of them, as made and fold by 
him. 
5 9 
CHAP. 
