Fannie E. Stebbins, « Nature-Study in Camp », New York, The Nature Study Review, vol. 18, n°4,  avril 1922, p. 145.

Dragon flies dart above the surface catching smaller insects, whirligig beetles rush wildy about in spiral, water boatmen come to the surface for air, caddis fly larvae with houses of various styles of architecture crawl sluggishly about on the bottom or on sterms of plants, snails lay their eggs, a freshwater mussel ploughs …