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Title: Mouth, oval
Original Title: Bouche ovale
Volume and Page: Vol. 2 (1752), p. 350
Author: Unknown
Translator: Charles Ferguson [Colby College, Emeritus]
Subject terms:
Organ
Original Version (ARTFL): Link
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URL: http://hdl.handle.net/2027/spo.did2222.0003.999
Citation (MLA): "Mouth, oval." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Charles Ferguson. Ann Arbor: Michigan Publishing, University of Michigan Library, 2020. Web. [fill in today's date in the form 18 Apr. 2009 and remove square brackets]. <http://hdl.handle.net/2027/spo.did2222.0003.999>. Trans. of "Bouche ovale," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, vol. 2. Paris, 1752.
Citation (Chicago): "Mouth, oval." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Charles Ferguson. Ann Arbor: Michigan Publishing, University of Michigan Library, 2020. http://hdl.handle.net/2027/spo.did2222.0003.999 (accessed [fill in today's date in the form April 18, 2009 and remove square brackets]). Originally published as "Bouche ovale," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, 2:350 (Paris, 1752).

Oval mouth, a kind of organ pipe mouth that is rounded at the top, as shown in [Plate VIII] fig. 31.

To lay out this mouth , let b d , [Plate VIII] fig. 33 , equal its width; this width must be divided in two at point 3 ; raise perpendicular 3 e , along which take 3 f equal to d b . Taking point f as center, describe half-circle, e , with a radius half of d b , which, with perpendiculars to points d and b , will complete the figure of the oval mouth . See Organ.

Pointed mouth . This is the term for organ pipe mouths whose upper lip, [Plate VIII] fig. 33 , is shaped like an isosceles triangle, abc : bc is the width of the mouth; c2 is one and one-half times that width, which is the height of the mouth , defined by drawing the two equal lines, ac and ab . See the article Organ.