On aegophony / by William H. Stone.

  • William Henry Stone
Date:
[1871?]
Catalogue details

Licence: Public Domain Mark

Credit: On aegophony / by William H. Stone. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    have'phenomena in what we may call an ascending scale; beginning with the rough vibration of vocal fremitus, which, like some forms of loud cardiac murmur, is actually sensible to the tactile papillfE of the finger, but which is easily intercepted, through the phenomena of vocal resonance which are more penetrating, up to Eegophony^ which is thus explained to be vocal resonance divested of its lower fundamental tones by the deadening effect of a layer of more or less inelastic fluid. Therefore, I was led early in the paper to name it a filtration. It is thus not dissimilar in kind from that w^hich in a transparent medium, like glass, obstructs the undulations of sound and heat, but gives free passage to the finer and more subtle pulsations of light.