Aristotle, Physics Book II (Ch 1-3); Book III (Ch 1-3; 6-9)

All these veins coalesce in a single large vein, along the entire gut and stomach to the oesophagus; about these parts there is a great ramification of branch veins. ... there occur spasms and rumbling noises within the womb until such time as the discharge manifests itself. ... owing to excessive desire, arising either from youthful ... ................
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