19. LINEN 70 20. AN ESPARTO DUSTER 74 21. SINCLAIR'S "VOMITING" ESPARTO BOILER 75 22. A PORION EVAPORATOR 76 23. SCOTT'S MULTIPLE EFFECT EVAPORATOR 79 24. A PRESSE-PÂTE FOR ESPARTO PULP 85 25. ESPARTO PULP 88 26. A CYLINDRICAL DIGESTER FOR BOILING FIBRE 89 27. STRAW 93 28. A PAIR OF BARKERS FOR REMOVING BARK FROM LOGS OF WOOD 98 29. VIEW OF HORIZONTAL GRINDER (A), WITH SECTION (B) 99 30. A VERTICAL GRINDER FOR MAKING HOT GROUND MECHANICAL WOOD PULP 101 31. CENTRIFUGAL SCREEN FOR WOOD PULP 102 32. SECTION OF CENTRIFUGAL SCREEN FOR WOOD PULP 103 33. WOOD PULP DIGESTER, PARTLY IN ELEVATION, PARTLY IN SECTION 106 34. VIEW OF ORDINARY SULPHUR-BURNING OVENS 108 35. SPRUCE WOOD PULP 114 36. MECHANICAL WOOD PULP 115 37. THE SCREENS FOR REMOVING COARSE FIBRES FROM BEATEN PULP 118 38. THE PAPER MACHINE (WET END SHOWING WIRE) 119 39. PAPER MACHINE SHOWING WIRE, PRESS ROLLS, AND DRYING CYLINDERS 123 40. SINGLE CYLINDER OR YANKEE MACHINE 130 41. SECTION OF WET PRESS, OR BOARD MACHINE 131 42. DOUBLE CYLINDER BOARD MACHINE 133 43. APPARATUS FOR MAKING PARCHMENT PAPER 138 44. GENERAL ARRANGEMENT OF PLANT FOR MAKING "ART" PAPER 143 45. SECTIONAL ELEVATION OF "COATING" PLANT 144 46. COTTON PULP BEATEN 8 HOURS 179 47. COTTON PULP BEATEN 37 HOURS 180 48. PLAN AND SECTIONAL ELEVATION OF A "HOLLANDER" 185 49. BEATING ENGINE WITH FOUR BEATER ROLLS 186 50. UMPHERSTON BEATER 188 51. SECTION OF UMPHERSTON BEATING ENGINE 189 52. NUGENT'S BEATING ENGINE WITH PADDLES FOR CIRCULATING THE PULP 190 53. A "TOWER" BEATING ENGINE WITH CENTRIFUGAL PUMP FOR CIRCULATING PULP 191 54. WORKING PARTS OF A MODERN REFINING ENGINE 192