Democratic Sentinel, Volume 22, Number 19, Rensselaer, Jasper County, 21 May 1898 — Heart Facts and Figures. [ARTICLE]

Heart Facts and Figures.

The human heart is six inches in length, four Inches in diameter, and beats ou au average of seventy times per miuute, 4,200 times an hour, 100,800 times a day, and 36,792,000 times In the course of the year, so that the heart of an ordinary man 80 years of age has beaten 3,000,000,000 times.