One thousand medical maxims and surgical hints / by Nathaniel Edward Yorke-Davies.
- N. E. Yorke Davis
- Date:
- 1883
Licence: Public Domain Mark
Credit: One thousand medical maxims and surgical hints / by Nathaniel Edward Yorke-Davies. Source: Wellcome Collection.
51/168 page 47
![336-] MIDDLE AGE. 331. The average duration of life in persons at thirty-five years of age, is twenty-nine in the male, and thirty in the female; at forty years, twenty-six in the male, and twenty-four in the female. 332. At fifty, nineteen in the male, and twenty in the female; at fifty-five, sixteen in the male, and seventeen in the female; and at sixty, thirteen in the male, and fourteen in the female. 333. The most common diseases of middle age are diseases of the lungs, heart, brain, and kidneys. 334. A healthy man in one year consumes on the aggregate, of solids and fluids combined, about three thousand pounds (nearly one ton and a quarter). In infancy and youth the receipts are greater than the expenditure; but in old age this rule is reversed, and, as with a spendthrift, the means of repair at last become exhausted. 335. About one sixth part of the entire weight of the body is taken up by the blood. 336. The pulse of a healthy adult varies from seventy to seventy-five beats per minute in repose; in a newly-born infant it varies from one hundred and thirty to one hundred and forty beats per minute. It may be strong or weak, hard or soft,](https://iiif.wellcomecollection.org/image/b24874577_0051.jp2/full/800%2C/0/default.jpg)
