Note 199 — Chapter XXXV · HOW TO MAKE AQUAFORTIS FOR PARTING.
C. R. (Charles Robert) Ashbee translation
Allume di rôcca arso. Prof. Church tells me that this is probably sulphate of alumina, from alum shale.
C. R. (Charles Robert) Ashbee translation
Allume di rôcca arso. Prof. Church tells me that this is probably sulphate of alumina, from alum shale.