""We strongly advise those desirous of doing artistic work to begin by studying tone, expose (always giving two exposures to each subject) on selected subjects, especially fit for the study of tone; for example, a figure in a white dress against a white background, another in a black dress against a black background, and then a white dress against a black background, and a black dress against a white background; some white flowers against a sheet of white paper; yacht-sails against the sky; faces against the sky; black velvet in bright sun-..."
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Complete copy of
Naturalistic Photography for Students of the Art by Peter Henry Emerson for download here.