64. What are the essential differences between a Monotype and a Linotype?
65. Describe the operation of the Monotype keyboard.
66. Describe the operation of the casting machine.
67. What peculiarity has the Monotype?
68. What is type made of?
69. What are the qualities of the several ingredients?
70. What can you say of the uses of different metals in the type foundries?
71. What sort of type metal is used in composing machines?
72. What other material is used for type?
73. For what purpose is it used?