Were Lamb a matter-of-fact correspondent it might be pointed out that tulips are not much to watch in September. During the winter of 1824-5 he suffered from ill health, and in April, 1825, he was allowed to retire from the East India House with a pension of two-thirds of his salary, less a small sum to assure an annuity for his sister in the event of his dying first. For thirty-three years had he continued in his office, and his salary had gradually grown from the modest L70 of the beginning to ten times that amount at his retirement, so that he became a superannuated man with an income ample for the modest requirements of himself and Mary. On the subject of his retirement he wrote some touching letters to friends such as Wordsworth and Bernard Barton, and also in his accustomed manner made the crucial event the subject of a delightful "Elia" essay. He had before expatiated on the excellent position of the authors who were not "authors for bread"--men who like himself were employed in business during the day and had to dally with literature in off hours. Certainly Lamb's "hack work," the work done for the booksellers during the early part of the century, was his least memorable achievement, and we cannot help feeling what a boon it was to Lamb himself and to Letters that he was chained so long to the desk's dead wood, instead of being dependent on the favour of the booksellers for his livelihood, and upon the popular taste of the moment for his themes. In 1820, during a summer holiday at Cambridge, Lamb met an orphan girl, Emma Isola, then eleven years of age, whom he and Mary later adopted, and the letters have many references to the welcome companionship of Emma, who gave something of a new interest in life to the brother and sister.[4] In 1827 the household removed again, this time to the Chase, Enfield. Two years later they gave up the house of their own and boarded with a Mr. and Mrs. Westwood, their next-door neighbours. In 1833 Mary, who had had frequently to be "from home," as it has been euphemistically put, was under the charge of Mr. and Mrs. Walden at Bay Tree Cottage, Edmonton, when Charles decided to live under the same roof with her, even during her periods of mental derangement, and followed her thither, in The not unpeaceful evening of a day Made black by morning storms. [Footnote 4: Emma Isola married Edward Moxon, the publisher.] How much Mary's companionship meant to him may be gathered from an open-hearted letter which he had written in 1805 to Dorothy Wordsworth--and it meant no less in the years that followed: