Note 2 — Chapter IV · Of the Definitions and Axioms which relate to Space.

I formerly stated views similar to these in some ‘Remarks’ appended to a work which I termed The Mechanical Euclid, published in 1837. These Remarks, so far as they bear upon the question here discussed, were noticed and controverted in No. 135 of the Edinburgh Review. As an examination of the reviewer’s objections may serve further to illustrate the subject, I shall annex to this chapter an answer to the article to which I have referred.