The proportion of males to females is 1000 to 1068, this being a higher proportion of females than any recorded in the 19th century, during which the lowest proportion of females was 1036 in 1821. The proportion rose at each census from 1851. But on the other hand 1000 male children were born against only 965 female, on an average in 1891-1901. This excess of male births, which is usual, has been ascertained to find its equilibrium, through a higher rate of infant mortality among the males, about the tenth year of life, and is finally changed by perilous male occupations and other causes, including the stronger tendency of males to emigration. The proportion of females varies much in different localities, being highest in such districts as London and the home counties, which are residential, and in which, therefore, many domestic servants are enumerated; and Somersetshire, Bedfordshire and other seats of industries which especially occupy women (e.g. the straw-plaiting of the county last named). It is lowest, naturally, in the mining districts, as Glamorgan, Monmouth, Durham, Northumberland; but an exception may be noted in the case of Cornwall, where a high proportion of females is attributed to the emigration of miners consequent upon the relative decrease in importance of the tin-mines. In 1901 the proportion of females to males in urban districts was 1086 to 1000, and in rural districts 1011 to 1000. _Urban Districts of England and Wales with Population exceeding 80,000_ (1901).