Mill's first essays were written in the traveller about a year before he entered the india house. from that time forward his literary work was uninterrupted save by attacks of illness. his industry was stupendous. he wrote articles on an infinite variety of subjects, political, metaphysical, philosophic, religious, poetical. he discovered tennyson for his generation, he influenced the writing of carlyle's french revolution as well as its success. and all the while he was engaged in studying and preparing for his more ambitious works, while he rose step by step at the india office. his essays on unsettled questions in political economy were written in 1831, although they did not appear until thirteen years later. his system of logic, the design of which was even then fashioning itself in his brain, took thirteen years to complete, and was actually published before the political economy. in 1844 appeared the article on michelet, which its author anticipated would cause some discussion, but which did not create the sensation he expected. next year there were the "claims of labour" and "guizot," and in 1847 his articles on irish affairs in the morning chronicle. these years were very much influenced by his friendship and correspondence with comte, a curious comradeship between men of such different temperament. in 1848 mill published his political economy, to which he had given his serious study since the completion of his logic. his articles and reviews, though they involved a good deal of work-as, for instance, the re-perusal of the iliad and theodyssey in the original before reviewing grote's greece-were recreation to the student. the year 1856 saw him head of the examiners' office in the india house, and another two years brought the end of his official work, owing to the transfer of india to the crown. in the same year his wife died. liberty was published shortly after, as well as the thoughts on parliamentary reform, and no year passed without mill making important contributions on the political, philosophical, and ethical questions of the day.