A text-book on hygiene and pediatrics from a chiropractic standpoint

by J. H. Craven

Stagnant Water

Stagnant water favors the breeding of mosquitoes and the development of certain dis-eases, malaria and cholera for example; hence the necessity for proper drainage. Trees are sometimes planted in such districts and they, together with the subsoil drainage, render the conditions more healthful. The trees and other vegetation in hot climates absorb the water from the ground and then it is evaporated from the leaves and in this way soil is made drier.