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I am requested by a well known ovariotomist to state my observation of the voices of female singers when affected by gynecological disorders, hence the following is a brief statement of my observation.
The most difficult cases the laryngologist has to contend with are diseases of the throat caused by disturbance of the ovaries. It is a common thing to meet with cases of acute inflammation of the tonsils, larynx, pharynx and fauces in females during their menstrual period. I have observed the voice in many professional choir singers who have applied to me for treatment during the menstrual period, defective in gravity, force, and timbre, producing in many cases a husky sound, as of a low, masculine order.
A laryngologist of acute hearing who will train bis ear to the recognition of sounds and acquaint biniseli with a known voice, can detect a menstruate nine times out of ten.
VON KLEIN CH. VOICE IN FEMALE SINGERS AFFECTED BY GYNECOLOGICAL DISORDERS.. JAMA. 1891;XVI(16):551–552. doi:10.1001/jama.1891.02410680011001b