A large rectangular heraldic woodcut serves as a bookplate. In the center, an oval shield depicts the coat of arms of the city of Gdańsk: two vertically arranged crosses topped by a crown. Two standing lions act as supporters for the shield. The entire image is framed by ornate Baroque scrollwork and ribbons. Below the heraldry is a decorative frame containing text.

FROM THE LIBRARY OF THE

COUNCIL OF GDAŃSK:

original: "EX BIBLIOTHECA SENATVS GEDANENSIS"

ON

SECRET

CHARACTERS

IN LETTERS

original: "DE FVRTIVIS LITERARVM NOTIS"

OR

THE ART OF COMMUNICATING THE THOUGHTS OF THE MIND

secretly to others, or of fishing out and unknotting

those things communicated by others,

FOUR BOOKS.

BY GIAMBATTISTA DELLA PORTA,

AN AUTHOR OF NAPLES.

FURTHERMORE, THERE ARE EXPLAINED, AMONG

other things, passages from ancient writers speaking on

this art, and derived from the same source.

A woodcut emblem shows a profile bust of a woman, likely the goddess Minerva, wearing a highly ornate plumed helmet and classical armor. The bust sits on a cubic pedestal on a small patch of grass. Flanking the image are the vertical words "KNOWLEDGE" original: "SCIENTIA" on the left and "UNCHANGING" original: "IMMVTABILIS" on the right.

On Secret Marks of Letters

ON

SECRET

CHARACTERS

IN LETTERS

OR

THE ART OF COMMUNICATING THE THOUGHTS OF THE MIND

FOUR BOOKS.

BY GIAMBATTISTA DELLA PORTA,

AN AUTHOR OF NAPLES.

FURTHERMORE, THERE ARE EXPLAINED, AMONG

AT MONTBÉLIARD. A city in eastern France, known in Latin as Montisbeligardum.

By Jacob Foillet, at the expense of Lazarus

Zetzner.

1593.