From 53 to 85 per cent. of the population marry under the age of 30 years. The per cent. is lowest among rich, and highest among poor families.

Men marry at a later period than women. The average age for men is 27 9-10, for women 25 7-10 years.

There is no reason why children should die, except it be found in the violation of the laws of nature, by foreparents.

Carpenters and country laborers live longer than any other laborers.

The average life, after the commencement of intemperate habits, is 21 7-10 years for beer drinkers, 16 6-10 for spirituous liquor drinkers. It is thus seen that distilled liquors are most dangerous.

It is shown that the death rate among soldiers, even though they are well provided for and remaining in barracks, is enormous. It far surpasses civilians. Lung diseases and cholera are twice as fatal to soldiers as to civilians. This large death rate among soldiers is due to overcrowded barracks, sameness of diet, and want of healthful exercise. The mortality in the navy is nearly double that in the merchant service—all being of disease.

Mortality is affected by population, location and climate.

It is a mistaken notion that mild winters are fatal to human life. Extremes are always harmful.