Case IV.

Deaf-Mutism caused by Cerebro-Spinal Meningitis.—J. S. aged 10, deaf since three years of age, from the effects page 35 of cerebro-spinal meningitis, and having been deprived of hearing so early in life is also dumb. On applying the tuning-fork on his head and teeth, he intimated he could hear. I then applied the Audiphone to his teeth, and he seemed to hear when spoken to. I then asked him to repeat the sound I made; being a bright boy, and taking much interest in his examination, I had no difficulty in getting him try to repeat any sound I made. Thinking it likely he only followed the motion of my lips or mouth, I had his eyes closed, and then repeated the sounds, which he as promptly endeavored to imitate, some even remarkably correct—leaving no doubt on my mind as to his hearing with the Audiphone.