30,000.000 HEART BEATS A YEAR.

Mataura Ensign, 26 September 1913, Page 4

30,000.000 HEART BEATS A YEAR.

The weight of the average person's heart is only lloz, yet so power)'uJ is it that it does enough work every daj to lilt VJf) tons a foot high. The hear# is', in fact, one of tho most wonderful power machines for its size in existence.-. It beats about 70 times a minute, and with every boat drives six ounces ol blued through the body. In a year th« heart heats 30,(KK) ; (NM) times, and drivei over tons of blood through th* * body. A pint of blood weighs ronghlj] a pound, so that a little over tiirod gallons <,f blood are forced through th« heart every minute, or over 1,-VK),<)<)•' gallons a year.