Emmenologia . l be derived to the Fluid,that it may the more eafily break thro theVeilels. For if the axis of a cylindrical Ca-nal AC (as in Fig. i.) be always parallel to thedirection of the Fluid, there will be no Impetuson its fides from the Particles of the Fluid :, andtherefore there will be no Stroke, but the Fluidwill prefs perpendicularly on the fides of theVeifels, with all that Force with which it isitfelf preifed. But if the quantity of the Fluidbe encreafed, the PreiTure and the Force whichis employed againft the fides of the Canals, willaifo be encreafed: Whence a diftenfion of th
Emmenologia . l be derived to the Fluid,that it may the more eafily break thro theVeilels. For if the axis of a cylindrical Ca-nal AC (as in Fig. i.) be always parallel to thedirection of the Fluid, there will be no Impetuson its fides from the Particles of the Fluid :, andtherefore there will be no Stroke, but the Fluidwill prefs perpendicularly on the fides of theVeifels, with all that Force with which it isitfelf preifed. But if the quantity of the Fluidbe encreafed, the PreiTure and the Force whichis employed againft the fides of the Canals, willaifo be encreafed: Whence a diftenfion of theCanals will arife, and therefore a loofer textureof the Fibres, and alefs cohxfion amongftthem-felves. But if the Canal be a little infle&ed, tothat the Blood be carried obliquely from B to C,(as in Fig. 2.) the bulk of the Blood being en-creafed, will not only diftend the fides of it, butbe carried with an hnpetus upon the curved Parts,and by the Stroke break thro! the Fibres at this EMM EN O LOG I A. z9. E C this Time fufficiently diftended : and that fomuch the eafier, fince, as Borelli has fliown,the force of a Stroke is infinitely greater than a-ny Prefjure. But the more the Ganal is infle-Bed^ fo much greater will be the magnitude oft\\t Stroke^ and that in the Ratio of the fine ofthe Angle of Incidence. For if the Blood bedirefted (as in Fig. 3.) from D to C, the Strokewill be greater at the fide C, than when theBlood flowed (in Fig. 2.) from B to<7. There-fore p emmenologia; fore the more the Canal is infleded, the greaterwill be the Stroke \ till it comes to the perpen-dicular Flexure (as in Fig. 4.) where it is thegreateft \ becaufe there the Sine of the Angleof Incidence is greateft. Therefore it is veryplain, that the force of the Stroke is augmentedin Canals that are curved. And indeed I was willing to explain this themore largely, that it might clearly be known,that the ftrufture of the Uterus does not a littleconduce to the difcharging theMcnfes that way. Amo
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