The sub-title of this lecture is in strictness erroneous. The lecture has not been rewritten; it is now written for the first time. It unfortunately happened that after I had promised the University authorities to deliver it in the course of last year, events occurred which deprived me of the leisure necessary to the proper carrying out of my undertaking. I had therefore to choose between leaving the managers of the Romanes trust without a lecturer; or doing my best to give, in some rough and extempore form, the outlines of the subject which I had selected for treatment.
Rightly or wrongly I chose the latter of these alternatives: and the choice was not without its advantages. But it had two serious disadvantages. My theme was little adapted to my capacity for extempore statement, and it was very unfamiliar to the reporters. The consequences were such as might perhaps have been foreseen. The lecture, as reported, gave most imperfect expression to my views;—was, indeed, sometimes barely intelligible.