In the spring of 1879 I gave at the Old South Meeting-house in Boston a course of lectures on the discovery and colonization of America, and presently, through the kindness of my friend Professor Huxley, the course was repeated at University College in London. The lectures there were attended by very large audiences, and awakened such an interest in American history that I was invited to return to England in the following year and treat of some of the philosophical aspects of my subject in a course of lectures at the Royal Institution.