C 848 ] 
It is a long, fmall, round Stiiet {.Fig. 6.2, gradually 
decreafing from the Handle to the Point,- and is fitted 
to a long Silver Tube of the fame Shape [Fig. 7.], 
into which the Needle is put, and the Point comes 
out at the End one Quarter of an Inch. This is to 
be introduced into the Eye at the Orifice the other 
Needle had made : When it is fo far introduced, as 
the End of the Tube is within the pofterior Chamber 
of the aqueous Humour, the Needle is to be with- 
drawn, leaving the Tube in theEye; and then, with 
the Mouth, may be fucked into the Tube, ail the 
Blood, and watery Humour, that is contained there, 
or any other floating Particles : Then the Tube is to 
be withdrawn, and the Eye left to replenifh itfelf 
with the aqueous Humour again ; which will take 
Twelve or Eighteen Hours at moll. 
The following Inftruments are propofed to remedy 
feme kinds of Deafnefs proceeding from Ob - 
flruttions in the external and internal auditory 
{Pajf ages. 
I N order to difeover, with more Exadnefs, whether 
the Diforder lies in the outward Ear, I make ufe of 
a convex Glafs, Three Inches in Diameter, fixed in a 
Handle, [Tab. VII. Fig . 8.] into which is lodged fome 
Wax Candle, which comes out at a Hole near the 
Glafs, and reaches to the Centre ; which, when 
lighted, will dart the collected Rays of Light into 
the Bottom of the Ear, or to the Bottom of any Cavity 
that can be brought into a ftrait Line, Therefore, when 
it is difeovered by the Help of this Glafs, and lighted 
Candle, that the Ear is full of hard Wax, which will 
not 
