This section is from the book "The Transmission Of Life. Counsels On The Nature And Hygiene Of The Masculine Function", by George H. Napheys. Also available from Amazon: The Transmission of Life.
Cases of inflammation of the lungs occur much more frequently among males than females. The influence of sex in the causation of the disease is probably, however, more ap-parent than real. Men are more generally exposed to changes of temperature, which are the principal exciting causes of the disorder.