Part Iii., =uses of the Sulphates of Aluminium and Iron.=--Chapters V.,

Uses of Aluminium Sulphate and Alums--Application to Wool and Silk--Preparing and using Aluminium Acetates--Employment of Aluminium Sulphate in Carbonising Wool--The Manufacture of Lake Pigments--Manufacture of Prussian Blue--Hide and Leather Industry--Paper Making--Hardening Plaster--Lime Washes--Preparation of Non-inflammable Wood, etc.--Purification of Waste Waters.--VI., =Uses and Applications of Ferrous Sulphate and Ferric Sulphates.=--Dyeing--Manufacture of Pigments--Writing Inks--Purification of Lighting Gas--Agriculture--Cotton Dyeing--Disinfectant--Purifying Waste Liquors--Manufacture of Nordhausen Sulphuric Acid--Fertilising.