yond
the scope of the present work to explain even in outline the methods in
use, but with the aid of the books mentioned below[158] a reader
possessed of the necessary time, mathematical knowledge, and patience,
will be able to pursue this matter as far as his inclination may lead
him. Johnson has found very useful the tables given in the eighth
edition of the _Encyclopaedia Britannica_ (Article, "Astronomy") but
strange to say these tables do not appear in ninth edition of that
famous work.

Lalande[159] has given numerous references to eclipses of the Sun during
the 16th, 17th and 18th centuries which may be useful to those who wish
to work at the history of eclipses.

FOOTNOTES:

[Footnote 144: _Denkschriften der Kaiserlichen Akademie der
Wissenschaften_, vol. lii. Vienna, 1887.]

[Footnote 145: There are several editions of this work in
circulation. The first (published in 1783) was in folio volumes,
but the best known edition is in a large number of octavo
volumes published in 1818 and following years. The eclipse lists
will be found in the 1st volumes of the first and second series
respectively. The French astronomer, Pingre, is responsible for
them.]

[Footnote 146: Published at Bononia (Bologna) in 1653.]

[Footnote 147: _Omnia Opera_, vol. ii. pp. 311-16. Edited by Ch.
Frisch. 8 vols. 8vo. Frankofurti-a-M., 1857-60.]

[Footnote 148: A collected edition of Tycho Brahe's works, edited by
"Lucius Barettus," was published at Augustae Vindilicorum (Augsburg)
in 1666. Lucius Barettus is an anagram for the real name Albertus
Curtius.]

[Footnote 149: J. L. E. Dreyer, _Tycho Brahe: a Picture of
Scientific Life and Work in the Sixteenth Century_.]

[Footnote 150: _Opus Chronologicum._ Francofurti ad Moenum, 1650.]

[Footnote 151: _Astronomica_, vol. iv. Lugduni, 1657.]

[Footnote 152: _Inleiding tot de Algemeene Geographie._ Amsterdam,
1740.]

[Footnote 153: _Astronomy Explained upon Sir Isaac Newton's
Principles._ 2nd ed. 4to, pp. 167-79. London, 1757.]

[Footnote 154: _Astronomy_, p. 178.]

[Footnote 155: _Historical and Future Eclipses._ 2nd Ed., 1896.]

[Footnote 156: _Total Eclipses of the Sun._ Boston, U.S., 1894.]

[Footnote 157: _Astronomical Journal_, vol. x. pp. 25, 185; vol. xi.
pp. 5, 28, 57; vol. xii. p. 121; vol. xiii. p. 73; vol. xv. p. 73;
vol. xvi. pp. 89, 175