I have endeavored to give a full history of the use and application of the various agents employed in the place of the natural membrana tympani. By this time we have arrived at some certain definite ideas as to the true value of these aids to hearing:
First, their importance to the health of the ear, by preventing dryness, and the general danger to the hearing from the want of the protecting power of the natural membrane.
Second, we can hear to a certain degree without the membrana tympani; but we cannot have perfect hearing without it.
Third, we have in the various agencies which have been employed not only the means of protecting and preventing the drying effects of the air, but also the prevention of the passage into the middle ear of injurious foreign agents, the prevention of disease from cold air or water, so apt to set
TURNBULL L. ABSTRACT OF PAPER ON THE HISTORY AND TRUE VALUE OF THOSE AIDS TO HEARING USUALLY TERMED ARTIFICIAL TYMPANIC MEMBRANES.Read before the Section of Otology of the British Medical Association, August 10, 1888.. JAMA. 1888;XI(11):378. doi:10.1001/jama.1888.02400630018001e