Hilda Wade's gift was so unique, so extraordinary, that I must illustrate it, I think, before I attempt to describe it. But first let me say a word of explanation about the Master. I have never met anyone who impressed me so much with a sense of GREATNESS as Professor Sebastian. And this was not due to his scientific eminence alone: the man's strength and keenness struck me quite as forcibly as his vast attainments. When he first came to St. Nathaniel's Hospital, an eager, fiery-eyed physiologist, well past the prime of life, and began to preach with all the electric force of his vivid personality that the one thing on earth worth a young man's doing was to work in his laboratory, attend his lectures, study disease, and be a scientific doctor, dozens of us were infected by his contagious enthusiasm. He proclaimed the gospel of germs; and the germ of his own zeal flew abroad in the hospital: it ran through the wards as if it were typhoid fever. Within a few months, half the students were converted from lukewarm observers of medical routine into flaming apostles of the new methods.