Cloacal morphology in its relation to genito-urinary and rectal diseases(With 54 plates and 93 illustrations.) . €t£ctac ^Ureter ? Cloa£ctl \. rtMettWl Plate 1.—Evolution of the Cloaca. begin in the cloacal aperture into the definitive anus and the urino-genital sinus or folds of the lateral walls of the cloaca grow towards each other, until they meetand coalesce, thus forming the perineum. The proctodaeum breaks through into thelumen of the gut, and the cloaca, as such, is no more. These changes are completed oviciujcT . S.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishercincinnatitheautho