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Hatari
Roman Alum From Roasted Alum Stone: Weathered a Month, Boiled and Crystallised in Wooden Vessels (Tomlinson, 1854)
The Tolfa way of making Roman alum, from Tomlinson's Cyclopaedia of Useful Arts (1854): alum stone roasted twice over a wood fire, kept wet for a month until it falls to powder, boiled in water, settled, and crystallised in square wooden vessels that come apart, with a second crop from the mother liquor.
Juu
About 6 weeks
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
IngiaMchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.