Vol.. 8, 1922 
PHYSICS: J. P. MI N TON 
277 
of audition showed that both patients were able to hear all the tones 
at sound intensities of not unusually large magnitudes, and furthermore 
both patients had about the same impairment of hearing. They were also 
able to recognize perfectly all the tones of the various pitches at the in- 
creased intensities. Care was taken to make sure that the patients were 
Doub/e Vi6'i'fih'or?3 per S <?c • 
O /coo 2000 3000 ^ooo soop 
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hearing with the tested ears and not with the opposite ears. In the case 
of the patient represented by Curve 1 the opposite ear possessed normal 
hearing at 1000 d. v. and 4000 d. v. and it was assumed that the opposite 
ear was normal. The opposite ear, however, in the case of the patient rep- 
resented by Curve 2 was quite defective in hearing. The possibility existed 
