Its unhealthfulness is a factor of prime importance in what may be called the general scheme of the country, and has had, as we shall presently see, the most important historical consequences.
"Impressions of South Africa"
James Bryce
Very fortunately for him, thanks to the progress of hygiene, which, abating all the old sources of unhealthfulness, has lifted the mean of human life from 37 up to 52 years, men have stronger constitutions now than heretofore.
"In the Year 2889"
Jules Verne and Michel Verne
The high percentage of men unfit for military duty was not due to the Boer's unhealthfulness, for he is as healthy as farmers are in other parts of the earth.
"With the Boer Forces"
Howard C. Hillegas