CHAPTER VII.
RECOMMENDATIONS AND AUXILIARY PROCESSES.--ZINK AND STEEL PLATES.--VARIOUS THEORIES.
A. _Recommendations and Auxiliary Processes._
73. The Roulette 49 74. The Flat Point 49 75. The Graver or Burin 49 76. Sandpaper 50 77. Sulphur Tints 50 78. Mottled Tints 51 79. Stopping-out before all Biting 51
B. _Zink Plates and Steel Plates._
80. Zink Plates 52 81. Steel Plates 52
C. _Various other Processes._
82. Soft Ground Etching 52 83. Dry Point Etching 53 84. The Pen Process 54