LONG, ST JOHN, was born at Newcastle in Limerick, in 1798. From his father, a person of versatile ingenuity, he inherited a disposition to try his hand at whatever vocation came in his way. At the age of 25, after studying painting in Dublin, he set out for London as an artist. His merit not meeting with due appreciation, he resolved to turn his hand to medicine. In 1826 he acquired great celebrity by his specific for consumption and other diseases generally regarded as incurable. After some time, he was tried for the death of a young lady, a patient, and found guilty of manslaughter. So great was his influence that no less than sixty-three persons of rank appeared in his favour. After realising a large fortune, he fell a victim to the disease which he professed to cure at the age of 36.