"In persons in whom from disease or a cold the eustachian tube is permanently or temporarily closed, the sense of hearing is injured; but this may be accounted for by mucus accumulating within the tube, and the consequent exclusion of air."
"Is not the elegancy of neatness as agreeable to your sight as to ours; is not the well favoured viand equally delightful to your taste; and doth not your sense of hearing suffer as much, from the discordant sounds prevalent in an ill regulated family, produced by the voices of children and many et ceteras?"
"It has often been supposed5 that the sense of hearing is thus rendered more acute; but I have watched persons listening intently to a slight noise, the nature and source of which they knew perfectly, and they did not open their mouths."