As commerce increased and many young men sought a seafaring life, navigation was taught, and advanced mathematics. In 1749 the notice of a Brooklyn “Philomath” on Nassau Island shows that he could teach “Arithmetick vulgar and decimal; Geometry plain and Spherical; Surveying, Navigation in 3 kinds, viz: Plain Mercator and Great Circle Sailing, Astronomy, and Dialling.” Thus did this Philomath meet the demand of the day. In 1773 the Flatbush Grammar School was taught by John Copp, who also took scholar-boarders, who “have the advantage of being taught geography in the winter evenings, with many other useful particulars that frequently occur to the teacher,” which seems to present a rather melancholy picture when we reflect on the other particulars of good coasting and skating that then were around Flatbush, on the Steenbakkery for instance, which, doubtless, would frequently occur on winter evenings to the scholar-boarder.