Pertaining to those particular organs used in their pronunciation.

83. Name the Organical divisions.

Labials, Dentals, Linguals, and Palatals.

84. What are Labials?

Those letters whose sounds are modified by the lips.

85. Name them.

B, F, M, P, V, W, and Wh.

86. What are Dentals?

Those letters whose sounds are modified by the teeth.

87. Name them.