WILLEBRORD SNELL

of ROYEN, Son of Rudolph.

THE DUTCH

TIPHYS, In Greek mythology, Tiphys was the legendary pilot of the ship Argo; here, Snellius uses the name to frame himself as a guide for Dutch mariners.

OR

THE ART OF SAILING, original: Histiodromice, a term derived from the Greek words for "sail" and "running" or "course."

AND NAVAL AFFAIRS.

SLP Likely a shorthand or Greek-style abbreviation, potentially a library mark or a specific reference code.

The printer's device of the Elzevir family depicts a scholar or hermit figure standing beside a large elm tree. The tree is entwined with a grapevine bearing clusters of fruit, illustrating the motto on a scroll woven through the branches: "NOT ALONE" (original: NON SOLVS), suggesting that wisdom and study provide their own companionship.