⚠There are significant ink stains and handwritten annotations on the lower half of the page, some of which partially obscure the printed text.

JOHANNES KEPLER’S

MATHEMATICIAN to His Sacred Imperial Majesty Kepler served as the Imperial Mathematician to Holy Roman Emperor Rudolf II.

DIOPTRICS The title Dioptrice refers to the study of the refraction of light through lenses, as opposed to "Catoptrics," the study of reflections from mirrors.

A demonstration of those things which happen to sight and visible objects

because of the lenses original: "conspicilla" invented

not so long ago.

A small decorative woodcut fleuron ornament with symmetrical leafy scrolls.

Including letters from Galileo regarding those things which, since the publication of the

Starry Messenger, have been discovered as new and wonderful in the heavens

by means of the telescope original: "perspicilli".

Also

An examination of the preface by Jean Pena of France to Euclid’s Optics, concerning

the use of optics in philosophy.

A rectangular woodcut ornament featuring a central grotesque mask or face surrounded by elaborate scrollwork, flanked by two winged figures (cherubs or putti) reclining within the decorative borders.

From the Library Catalog This is a later handwritten addition, likely for archival purposes.

AT AUGSBURG Augusta Vindelicorum is the Latin name for the city of Augsburg, Germany.

from the press of David Franck.

With Imperial Privilege for 15 years.

1611.

Handwritten ownership marks or signatures at the bottom of the page, including a crossed-out name on the right and a cursive signature on the left.?