Diagnosis of plant substances, [42]
Dicotyledonous stems, fibres of, [33], [46]
Direct-driven beaters, [126]
Discoloration of paper from mechanical wood pulp, [108]
Doctor, [157]
Draining bleached pulp, [114]
— boiled rags, [84]
— straw pulp, [100]
Drum washer for boiled rags, [85]
Dry pulp, preparing, [119]