Auroræ: Their Characters and Spectra

CHAPTER IX.

Chapter 730 wordsPublic domain

Supposed Causes of the Aurora: pp. 82-87.

Prof. Lemström’s Theory: pp. 87, 88.

Theories of MM. Becquerel and De la Rive: p. 88.

M. Planté’s electric experiments: pp. 89, 90.