Note 21 — COOK’S ORACLE:
Reading edition
“The Pulse in the new-born Infant, while placidly sleeping, is about 140 in a minute. Towards the end of the first Year 124 Towards the end of the second Year 110 Towards the end of the third and fourth Years 96 When the first Teeth drop out 86 At Puberty 80 At Manhood 75 At Sixty, about 60” Blumenbach’s Physiology, p. 40.
The expectations of Life are thus calculated by De Moivre—Subtract the age of the person from 86, half the remainder will be the expectation of that Life.