—, compounds, [7], [16]

—, decomposition, [12]

—, — by ferments, [15]

—, — by heat, [23]

—, destructive action of soda on, [64]

— di-nitrate, [10]

—, early form of alkali process for isolating, [65]

— formed by vinegar plant, [16]

—, formula, [4]

— gelatinised, [5]