Note 61 — Chapter IV · THE NEW PHILOSOPHY.

Elémens de la Philosophie de Newton, Pt. II. ch. vii. Berkeley himself only refers once to Cheselden's case: Theory of Vision vindicated, § 71. Professor Fraser, in his important edition of Berkeley's works (i. 444), reproduces from the Philosophical Transactions the original account of the operation, which is unfortunately much less clear and definite than Voltaire's emphasised version would make it, though its purport is distinct enough.