Ce livre est un traité scientifique d'anatomie écrit par le Dr Célestin Sieur au XIXe siècle. Il contient une description détaillée de la structure et de la fonction des fosses nasales et de leurs sinus, ainsi que des études cliniques et opératoires menées sur ces organes. Les médecins et les étudiants en médecine trouveront des informations précieuses dans cet ouvrage pionnier, qui a posé les bases de la recherche moderne sur les voies respiratoires supérieures. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.