For the last thirty-four years I have been teaching Psychology by written lectures to students in Ireland and America. From year to year I have been improv ing my course, and I claim to have advanced with the times. As Uncle Toby's stockings were so often darned that he was not sure whether there remained a single thread of the original fabric, so my prelections have been so constantly mended that I do not know that a single sentence remains of my early lectures.