Chevreul, the centenarian chemist, has only lately died.

Gladstone, Bismarck, and von Moltke exemplify vigor in age In the Senate of the United States, Senators Edmunds, Sherman, Hoar, Morrill, and other elderly statesmen display as much vigor as their youthful colleagues.

Instances of vigor in age could be cited in every profession and these few examples are only mentioned as typical.
At a recent meeting of the Society of English Naturalists, Lord Kelvin announced that during the last year 26 members had died at an average age of seventy-six and a half years; one reached the age of ninety-nine years, another ninety-seven, a third ninety-five, etc.
In commenting on the perfect compatibility of activity with longevity, the National Popular Review says:-- "Great men usually carry their full mental vigor and activity into old age.

M.Chevreul, M.De Lesseps, Gladstone, and Bismarck are evidences of this anthropologic fact.

Pius IX, although living in tempestuous times, reached a great age in full possession of all his faculties, and the dramatist Crebillon composed his last dramatic piece at ninety-four, while Michael Angelo was still painting his great canvases at ninety-eight, and Titian at ninety still worked with all the vigor of his earlier years.