Institutio Oratoria

Again our teacher must not tolerate the affected pronunciation of s [*]( Quintilian perhaps alludes to the habit of prefixing i to initial st, sp, sc found in inscriptions of the later Empire. See Lindsay, op. cit. p. 102. ) with which we are painfully familiar, nor suffer words to be uttered from the depths of the throat or

rolled out hollow-mouthed, or permit the natural sound of the voice to be over-laid with a fuller sound, a fault fatal to purity of speech; the Greeks give this peculiarity the name καταπεπλασμένον (plastered over), a term applied to the tone produced by a pipe,