In October 1834, he entered as a student at St Bartholomew's Hospital, in London. Here he is noted to have described the first journal club. Medical students in those days were left very much to themselves; there was no close supervision of their work, but Paget probably gained rather than lost by having to fight his own way. He swept the board of prizes in 1835, and again in 1836; in his first winter session, he discovered the pathogen for trichinosis, a parasitic disease caused by Trichinella spiralis, a minute roundworm that infests the muscles of the human body, and which is usually acquired by eating infected pork. In May 1836, he passed his examination at the Royal College of Surgeons, and became qualified to practice. The next seven years (1836–1843) were spent in London lodgings, and were a time of poverty, for he made only 15 pounds a year by practice, and his father, having failed in Business, could not give him any help. He managed to keep himself by writing for the medical journals, and preparing the catalogues of the hospital museum and of the pathological museum of the Royal College of Surgeons. In 1836, he had been made curator of the hospital museum, and in 1838, demonstrator of morbid anatomy at the hospital, but his advancement there was hindered by the privileges of the hospital apprentices, and because he had been too poor to afford a house-surgeoncy, or even a dressership.