[ 2IJ ] 
XXXV. A Method propofed to rejlore the 
Hearings when mjiired from an Obfruc- 
tio?t of the Tuba Eufliachiana. By Mr.- 
Jonathan Wathen, Surgeon^ in Devcn- 
fhire-Square. 
Read May 29 , X V Tpjatever obftrndls th-at paflage 
‘755- V V ieading from the ear into the 
nofe, called tuba Euftachiana, fo as to hinder the 
ingrefs of the air through it into the cavity of the 
tympanum, is, I believe, univerfally efteemed de- 
firudtive to the fenfe of hearing. Hippocrates ob- 
ferved, that in a quinfey of the fauces, the patient 
became deaf, by its compreffing and doling up this 
tube (a). Many pradical writers alTert the fame to 
have happened from adjacent ulcers, (3) y and 
I have known a fwelled tonlil occalion deafnefs. 
This canal opens into the lateral and anterior part' 
of the cavity of the tympanum ; is fo lhaped that 
It firft decreafes, as it defeends towards the pollerior 
part of the nofe, becoming very narrow j then fud- 
denly diverging, is much enlarged, opening into the 
(a) Coac. 1 1, n, 35. 
(b) Haller in Boerhav. de auditu, p. 380, and 416. Tulpius- 
1 . n. 35. a tumore palati. Valfalva, cap. v. pag. 90. a polypo. &' 
ulcere (viz. a certain yeoman had an ulcer above the uvula, on 
the left fide, which communicated with, and corroded part of, the 
orifice of the left tuba euftachianaj which, when he flopp’d- 
with a tent dipped in medicine, he immediately lofl his hearing in- 
that ear, but recovered it as fcon as the tent was taken out). 
pollerior. 
