. La cyclopaedia d'anatomie et physiologie. Anatomie ; physiologie ; Zoologie. Vue latérale de l'pinnal cartilages. nez, et les cartilages des narines, car ils entourent et dans une large mesure de- termine la forme de ces ouvertures. Le chef de partie de chacun d'eux est presque elliptique, anA occupe la partie antérieure de l'ala du nez. Postérieurement, cette partie devient soudainement plus étroite, et se poursuit dans un long, ondulé, et processus à travers la partie centrale de l'ala à la partie postérieure et la limite extérieure de la narine ; ou bien elle ab- ruptly cesse, et, en plac

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. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Lateral view of the pinnal cartilages. nose, and the cartilages of the nostrils, be- cause they surround and in great measure de- termine the form of those apertures. The chief portion of each of them is nearly elliptical, anA occupies the anterior part of the ala of the nose. Posteriorly, this portion either becomes suddenly narrower, and is continued in a long, undulating, and curved process through the middle part of the ala to the posterior and outer boundary of the nostril; or else it ab- ruptly ceases, and, in place of the process, there is a row of three or more small oval portions of cartilage, (sesamoid cartilages, ) imbedded in the fibrous membrane which forms the rest of the basis of the ala, and connects all the moveable cartilages to one another. Anteriorly, this chief elliptical por- tion is also continued into a narrow process, which, after proceeding for a very short dis- tance forwards, turns round abruptly, and is directed backwards and a little downwards by the side of the lower margin of the cartilaginous septum, to which, as well as to its fellow on the opposite side, it is pretty closely connected by fibre-cellular tissue. In this course, the carti- lage reaches a little beyond the anterior edge of the septum, so that, at the tip of most noses, there is in the middle line a small fossa bounded on each side by the lateral cartilages, and at the bottom of which is the anterior edge of the septum. The inner portion of this cartilage extends along about two-thirds of the inner boundary of the nostril, and terminates in an evenly rounded border; its lower margin is always rather lower than that of the cartilagi- nous septum, and assists in giving width and support to the columna. Sometimes, but more rarely, this inner process of the inferior cartilage is, like the posterior and outer process, separate from the chief elliptical portion. The structure of the cartilages of the no

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