Sermo mirabilis: or The silent language. Whereby one may learn prefectly [sic] in the space of six hours, how to impart his mind to any friend in any language, English, French, Dutch, &c. tho never so deep and dangerous a secret, without the least noise, word or voice; and without the knowledge of any in company. Being a wonderful art kept secret for several ages, in Padua, and now only published to the wise and prudent, who will not expose it, as a prostitute, to every foolish, and ignorant fellow. / By Monsieur La Fin, once secretary to his Eminence the Cardinal of Richlieu., by Charles de La Fin

Title:	Sermo mirabilis: or The silent language. Whereby one may learn prefectly [sic] in the space of six hours, how to impart his mind to any friend in any language, English, French, Dutch, &c. tho never so deep and dangerous a secret, without the least noise, word or voice; and without the knowledge of any in company. Being a wonderful art kept secret for several ages, in Padua, and now only published to the wise and prudent, who will not expose it, as a prostitute, to every foolish, and ignorant fellow. / By Monsieur La Fin, once secretary to his Eminence the Cardinal of Richlieu.
Author:	La Fin, Charles de
Note:	London : Printed for T. Salusbury at the Kings Arms, near St. Dunstans Church in Fleetstreet, 1693

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Subject:	Sign language -- Early works to 1800
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