London: William Nicol 1823. First Edition. , 21 pages. 4to. Disbound. Ex Libris stamp Edinensis Medicae Societatis in several places. Inscribed BY DAVY at head of title page "The Royal Medical Society from the author" and in pencil the number 2. Apparently extracted from a bound volume, this is the offprint issue from the Philosophical Transactions. Good. Disbound. 
Davy was a doctor, amateur chemist, and brother of the noted chemisty Sir Humphrey Davy. Pneumato-Thorax (more often known as a collapsed lung) is a condition where air gets between the lung and the chest wall, often affecting breathing. Davy examined a patient postmortem, "Abraham Iredill", of the 7th regiment of Foot, aged 30, who was admitted into the General Military Hospital at Fort Pitt, Chatham and who died shortly after arrival. This is a report of his observations.
On the rear of the title page is printed "Gentleman who are indulged with separate Copies of their Communications, are requested to use their endeavor to prevent them from being reprinted, till one month after the publication of that part of the Philosophical Transactions in which they are inserted. By Order of the President and Council, W. T. Brande, Sec. R. S."