Footnote 33
Part II, §7.  Ex.  The sun being in the first point of Cancer on the longest day, its rising will be shewn by the point in fig.5 where the horizon obliquus and Tropicus Cancri intersect; this corresponds to a point between P and Q in fig. 2, or to about a quarter to 4 A.M.  So too the sunset is at about a quarter past 8, and the length of the day 16½ hours; hence also, the length of the night is about 7½ hours, neglecting twilight.