Book,  Chapter

1        I,  XV   |    the 15th of January at her perihelion, she would be traveling
2        I,  XV   |       you have determined the perihelion of our orbit; but how about
3        I,  XVIII|    was being traversed at its perihelion, and were now exposed to
4       II,  III  |      longitude of the comet’s perihelion.~4. The perihelion distance
5       II,  III  |    comet’s perihelion.~4. The perihelion distance from the sun, which
6       II,  III  |     the comet would reach its perihelion, and, overjoyed at his discovery,
7       II,  III  |    Venus; that it reached its perihelion on the 15th; that it re-crossed
8       II,  IV   | increasing as they neared the perihelion.~It was on the 12th of May
9       II,  IV   | twelvemonth after passing its perihelion.”~“A twelvemonth! Not a