Sir George Humphry has investigated the life-histories of centenarians in England, with the view of ascertaining the causes and circumstances of longevity. The report was published by the Collective Investigation Committee of the British Medical Association in 1887. As one reads of the habits and lives of these men and women who attained to the age of one hundred years and more, one is struck by the fact, that they were almost invariably lean people, of spare habit, and of great moderation in eating and drinking. Of thirty-seven, three took no animal food, four took very little, twenty a little, ten a moderate amount, and only one acknowledged taking much meat. With regard to alcohol, the returns are much the same, and abstemiousness is found to be the rule of life of these centenarians. Fifteen had been total abstainers, either during the whole or part of their lives; two took very little alcohol, twenty-two a little, and ten a moderate amount. Sir George Humphry's interesting and valuable collection of facts regarding centenarians confirms opinions which have been held from time to time by various persons, in opposition to the generally accepted view that as age increases and strength diminishes, food should be more stimulating and strengthening.