[556] See Vol. I, page 43, note 7 {32}.
[557] See Vol. I, page 382, note 13 {786}. The history of the subject may be followed in Braunmühl's Geschichte der Trigonometrie.
[558] See Vol. I, page 377, note 3 {768}.
[559] See Vol. I, page 108, note 2 {192}.
[560] Michael Dary wrote Dary's Miscellanies (1669), Gauging epitomised (1669), and The general Doctrine of Equation (1664).
[561] John Newton (1622-1678), canon of Hereford (1673), educational reformer, and writer on elementary mathematics and astronomy.
[562] See Vol. I, page 87, note 4 {133}.
[563] "The average of the two equal altitudes of the sun before and after dinner."
[564] See Vol. I, page 42, note 4 {24}.
[565] London, 1678. It went though many editions.