Note 7 — WILLEM JANSZOON BLAEU

On the title-page of many of the books published by Blaeu, as on many of the maps which he issued, appears the expression “Sub signo solarii deaurati.” Most of the works printed by Blaeu before 1619 have as his printer’s device a balance with a terrestrial globe in the right scale and a celestial globe in the left, the latter being represented as the heavier and having the word “Praestat” printed below it. In certain later publications this mark was replaced by an armillary sphere, at the left of which is an allegorical figure representing Time and on the right a figure representing Hercules with the inscription “Indefessus agendo.” See p. 59.