Dissertatio inauguralis physico-medica de respiratione / quam consensu & auctoritate gratiosissimi medicorum ordinis in universitate patria pro summis in arte medica honoribus & privilegiis doctoralibus rite consequendis....

The author analyzes breathing by separating inspiration and expiration and identifying the roles of rib movement, intercostal muscles, and diaphragmatic descent in altering thoracic volume to drive airflow through pulmonary elasticity. Geometrical arguments are used to justify rib elevation and chest expansion, while experiments and physical reasoning examine air resistance, tissue elasticity, and friction within pulmonary passages. The work also critiques vacuum-based explanations and a proposed circular-propagation theory of air, combining anatomical observation, mathematical demonstration, and experimental critique to argue that active muscular action and material resistance govern pulmonary ventilation.