In 1871, and again in later years, Professor Flower acted as Examiner in Zoology for the Natural Science Tripos at Cambridge, where his suave and dignified manner, and innate courtliness rendered him as great a favourite as in the Metropolis. He was during some portion of his career Examiner in Anatomy at the Royal College of Veterinary Surgeons. Flower’s official connection with the museum of the Royal College of Surgeons was brought to a close by Owen’s resignation of the Post of Superintendent of the Natural History Department of the British Museum, when it was felt by all that the efficient and successful administrator of the smaller museum in Lincoln’s Inn Fields, was the one man specially fitted in every way to have supreme charge of the larger establishment in the Cromwell Road. Professor Flower was accordingly selected by the three principal trustees—the Archbishop of Canterbury, the Lord Chancellor, and the Speaker of the House of Commons—to fill this important post, into the duties of which he entered during the same year. His administration of the museum—which lasted until he was compelled by failing health to send in his resignation a few months before his death—is fully discussed in the fourth chapter, and was in every way a complete success. During his long and successful official career Sir William was the recipient of a number of honours (in addition to the medals he received for his Crimean service), and he was likewise on the roll of the more important societies connected with the branches of biological study in which he was specially interested.