<h1><SPAN name="ap-2" id="ap-2">Appendix II.</SPAN></h1>
<h2>Bibliography.</h2>
<p>For a full account of the various systems of Kepler and his predecessors
the reader cannot do better than consult the “History of the Planetary
Systems, from Thales to Kepler,” by Dr. J.L.E. Dreyer (Cambridge Univ.
Press, 1906). The same author’s “Tycho Brahe” gives a wealth of detail
about that “Phœnix of Astronomers,” as Kepler styles him. A great
proportion of the literature relating to Kepler is German, but he has
his place in the histories of astronomy, from Delambre and the more
modern R. Wolfs “Geschichte” to those of A. Berry, “History of
Astronomy” (University Extension Manuals, Murray, 1898), and Professor
G. Forbes, “History of Astronomy” (History of Science Series, Watts,
1909).</p>
<div style="break-after:column;"></div><br />