Page:Early History of Medicine in Philadelphia - George W Norris.djvu/61

 in Philadelphia, so that I have known him from a child, and am confident the same excellent dispositions, good morals, and prudent behaviour that have procured him the esteem and affection of all that knew him in his own country, will render him not unworthy the regard, advice, and countenance your Lordship may be so good as to afford him."

He likewise carried a letter from Dr. Franklin to Cullen, who received him most kindly. Towards this gentleman, with whom he frequently corresponded and consulted after his return to Philadelphia, he always felt and expressed a most grateful remembrance.

After fulfilling the requirements prescribed at the then famed medical school of Europe, and submitting his thesis, "De Puopoisei," he received the degree of Doctor from the University in that city, in 1763. It was in this thesis that the doctrine was first announced of pus being a true secretion made by the vessels in certain states of inflammation; in it, after showing the difference between his own opinion and that of his predecessors, he thus sets forth his views of the subject. "Hoc mea speciale habet, pus nempe neque in sanguine neque extra vasi generari, sed in ipsis vasis inflammatis; et vasorum mutationes ab inflammatione inductas, esse causas