According to The mortality From whence From this And from this the is at a it rises point it age it again observation, minimum at the until declines rises, but is not No. age of the age of to the equal to the age of mortality in the 2d column until the age of 15 — 13 — 23 — 34 — 48 16 — 13 — 23 — 35 — 48 17 — 14 — 22 — 33 — 48 18 — 13 — 23 — 33 — 48 19 — 13 — 24 — 34 — 48 20 — 13 — 24 — 34 — 48 The observation, No. 15, is founded on the large mass of 9,347 lives and 4,870 deaths. From this observation, it appears that, at the age of thirteen, the mortality out of a million is 5,742, being 174,750 less than in the first year of infancy At the age of twenty-three, it is 15,074, being 9,332 more than at the close of childhood. At the age of thirty-four, the period of complete manhood, it falls to 11,707, being 3,367 less than at the close of adolescence. At the age of forty-eight, the mortality returns to 14,870, all but identically the same as at twenty-three, the adult age. From the age of forty-eight, when, as has been stated, life just begins to decline from its meridian, the mortality advances slowly, but in a steady and regular progression. Thus, at the age of fifty-eight it is 29,185, being 14,315 more than at the preceding decade, or almost exactly double. At the age of sixty-eight, it is 61,741, being 32,556 more than at the preceding decade, or more than double. At the age of seventy-eight, it is 114,255, being 52,514 more than at the preceding decade. At the age of eighty-eight, it is 246,803, being 132,548 more than at the preceding decade.