Letter 1862 May 27

[Letter] 1862 May 27, Collingwood [to] Dr. Cranwick/J.F.W. Herschel. [Answers an enquiry from Cranwick concerning his (Herschel's) published argument against "the idea of an eternal self-existent matter" stressing that the core of the argument is against the "independent self-existence" rather than the eternity of matter. Amplifies this theme by extended discussion of atomic theory.]