substanceAlum BathColors & materialsA named workshop formula / material lemma (Alum Bath) drawn from public-domain workshop and apparel speech.Alum Bath is historically related to Salt.henley-formulas seats orphan alum-bath beside salt as a first craft peer — object speech, not a text-container or tradition dump.from Gardner Dexter Hiscox (ed.) · Henley's Twentieth Century Formulas, Recipes and Processes, 1914 (Gutenberg #53143; PD in the USA)historically related to · sourced · documentedsourcesHenley's Twentieth Century Formulas, Recipes and Processes · Gardner Dexter Hiscox (ed.)Gardner D. Hiscox (ed.), Henley's Twentieth Century Formulas, Recipes and Processes (1914).