smoke-acids

Updated: August 14, 2026

As it falls from the skies, it is perfectly pure except in large cities or manufacturing centres, where rain water contains small amounts of soot, smoke-acids, and dust, but even these are in such small amounts as to be practically harmless. But the moment it reaches the ground, it begins to soak up something out of everything that it touches; and here our dangers begin. Risks from Leaf Mould.

Woods Hutchinson - A Handbook of Health