—, cleaning, [100]

—, composition, [59], [99]

—, cutting, [100]

—, dimensions of cells, [58]

—, general chemical characteristics, [58]

— in paper, detecting, [200], [201]

—, microscopic features, [57]

— paper, source of weakness, [103]

—, pressure in boiling, [100]

—, proportion of soda for, [99]