CHRISTIAAN HUYGENS

OF ZULICHEM, SON OF CONSTANTIJN original: "Zulichemii, Const. F." Zulichem (or Zuilichem) was the family estate; "Const. F." stands for "Constantini Filius." Huygens was the son of the famous Dutch diplomat and poet Constantijn Huygens.

THE SYSTEM OF SATURN,

On the causes of the wonderful phenomena of SATURN,

THE NEW PLANET Huygens refers here to Titan, the largest moon of Saturn, which he discovered in 1655. In the 17th century, moons were often categorized as "secondary planets."

An ornamental tailpiece composed of floral fleurons arranged in an inverted triangle of six rows.

THE HAGUE, original: "Hagæ-Comitis," the Latin name for The Hague, meaning "The Count's Grove."

From the Printing House of ADRIAN VLACQ,

1659. R o B original: "M. DC. LIX."