Note complémentaire sur l'origine des nuances vertes des eaux de la nature

Spring, W. Bulletin de la Classe des Sciences, Academie Royale de Belgique (1908), (No. 3), 262-72; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010).

The author proved by observing long tubes of dilute suspensions of silica and mastic in water that brown tints may thus easily arise, but he obtained green tints only from colloidal suspensions of alumina and silica. The diffraction of light in such suspensions and not the nature of the suspended particles is therefore the cause, under certain circumstances at any rate, of the green tint of natural waters.

Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved.