(6) (p. 209). Ibid., Vol. I., p. 8.

(7) (p. 209). Ibid., vol. III., p. 508.

(8) (p. 210). Ibid., Vol. III., p. 361.

(9) (p. 213). Otto von Guericke, in the Philosophical Transactions of the Royal Society of London, No. 88, for 1672, p. 5103.

(10) (p. 222). Von Guericke, Phil. Trans. for 1669, Vol I., pp. 173, 174.

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CHAPTER XI

NEWTON AND THE COMPOSITION OF LIGHT

(1) (p. 233). Phil. Trans. of Royal Soc. of London, No. 80, 1672, pp. 3076-3079. (2) (p 234). Ibid., pp. 3084, 3085.

(3) (p. 235). Voltaire, Letters Concerning the English Nation, London, 1811.