Lot Essay
(1) This chart comes from the Novus Atlas of Joannes Janssonius as republished by Petrus Schenk and Gerard Valk from circa 1680 onwards. In Janssonius' original edition of 1657, the chart appeared first in volume V (Koeman Me 116 (15)). For a fuller discussion see C. Koeman, Atlantes Nederlandici, Amsterdam 1967-71, III, pp. 109-114.