Human Longevity.

OF 100,000 male and female, children, in the first month of life they are reduced to 90,506 or nearly a tenth. In the second to 88,155. In the third to 85,976. In the fourth to 85,139. In the fifth to 84, 122. In the sixth to 82,635, and by the end of the first year to 76,938, the deaths being 2 in 10. The next four years reduces the 76,938 to 63,048, indicating 36,952 deaths before the completion of the fifth year.
At 25 years the 100,000 are about half, or 49,695; at 55 about a third; at 59 about a fourth, or about 25,000; at 67 about a fifth; at 75, a tenth; at 80, a twentieth, or 5,000, and 10 attain 100 years.
About the age of 35 the lean man usually becomes fatter, and the fat man leaner. Again, between the years 45 and 50 is generally a critical time in a man's life, his appetite fails, he becomes logy, and tires easily upon the least exertion of body or mind. His muscles become flabby, his spirits droop and his sleep is poor and unrefreshing. After suffering under these complaints a year or two, he seems to acquire new vigor, and goes on to 62 or 63, when a similar change takes place, but when improvement comes he is apt to go on to a ripe old age.