Note 6 — SCIENTIFIC USE OF THE IMAGINATION.

In the ‘Prefatory Letter’ to his ‘Lay Sermons,’ Mr. Huxley speaks of ‘microscopists, ignorant alike of Philosophy and Biology.’ With reference to one conspicuous member of this class, a doctor of medicine, lately professor in a London college famous for its orthodoxy, both Mr. Huxley and myself have long practised, and shall, I trust, continue to practise, the tolerance recommended above.