In the theory of the evolution of the heavenly bodies, as set forth by Kant, Laplace, and Herschel, it was assumed that the elements that composed the earth are also to be found elsewhere throughout the solar system and the universe. The validity of this assumption was finally established by spectrum analysis. But this vindication was in part anticipated, at the beginning of the nineteenth century, by the analysis of meteorites. In these were found large quantities of iron, considerable percentages of nickel, as well as cobalt, copper, silicon, phosphorus, carbon, magnesium, zinc, and manganese.
REFERENCES
G. F. Becker, Kant as a Natural Philosopher, American Journal of Science, vol. V (1898), pp. 97-112.
W. W. Bryant, A History of Astronomy.
Agnes M. Clerke, History of Astronomy during the Nineteenth Century.
Agnes M. Clerke, The Herschels and Modern Astronomy.
Sir William Herschel, Papers on the Construction of the Heavens (Philosophical Transactions, 1784, 1811, etc.).
A. R. Hinks, Astronomy (Home University Library).
E. W. Maunders, The Science of the Stars (The People's Books).