of science and literature who have
attained advanced age. Kant, Buffon, Goethe, Fontenelle, and Newton
were all over eighty. Michael Angelo and Titian lived to eighty-nine
and ninety-nine respectively. Harvey, the discoverer of the
circulation; Hans Sloane, the celebrated president of the Royal Society
in London; Plater, the Swiss physician; Duverney, the anatomist, as
well as his confrere, Tenon, lived to be octogenarians. Many men have
displayed activity when past four score. Brougham at eighty-two and
Lyndhurst at eighty-eight could pour forth words of eloquence and
sagacity for hours at a time. Landor wrote his "Imaginary
Conversations" when eighty-five, and Somerville his "Molecular Science"
at eighty-eight; Isaac Walton was active with his pen at ninety;
Hahnemann married at eighty and was working at ninety-one.

J. B. Bailey has published a biography of "Modern Methusalehs," which
includes histories of the lives of Cornaro, Titian, Pletho, Herschell,
Montefiore, Routh, and others. 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. The Austrian General Melas was still in the
saddle and active at eighty-nine, and would have probably won Marengo
but for the inopportune arrival of Desaix. The Venetian Doge Henry
Da