xxviii The CONTENTS.

Page

rizon: To find in what pointsof the ecliptic the fun must beto make the star when risingor setting appear just free fromthe solar rays ; and thence thetimes of its heliacal rising and

setting 332

LXXXVI. Given, the latitude, and an-cient longitude, of a fixedstar : to find its right ascen-sion, and declination 337

A table of retrocession and autumnal equinoxes 339of months 34.0

of week days 340

of the horary difference in the motion ofthe first point of Aries, at the time ofa vernal equinox 341

of the difference of the passage of thefirst point of Aries over the meridian,for every day in the year 342

A

ERRATA.

Page 22. line 7, for 9538, read 5201.

22, line 14, for 5201, read 9538.

22, line 15, for 141, read 547.

68. line 6, for declination, read latitude.294. line 18, for fig. 25, read fig. 30.