Younger son of Thomas Wallis, a shipping agent of Southampton, was born at Southampton on Dec 18th, 1859, and graduated BA in 1879 from Gonville and Caius College, Cambridge, where he was admitted on Oct 1st, 1876, after being educated abroad, having already resided for a year at Queen's College. He entered St Bartholomew's Hospital in October, 1879, and in 1883 was House Surgeon to Alfred Willett (qv). After graduating in medicine he went out to Sydney as Resident Surgeon at the Prince Alfred Hospital. On his return he became FRCS. For two years he was a Demonstrator of Anatomy at St Bartholomew's, then at Charing Cross Hospital, where in 1898 he was elected Assistant Surgeon, and in 1905 Surgeon, having been Orthopaedic Surgeon 1894-1895. In addition he was Surgeon to the Grosvenor Hospital for Officers, to St Mark's Hospital for Diseases of the Rectum, and for a time Surgeon to the Metropolitan Hospital, St Luke's Hostel, St Monica's Home, and to the British Orphan Asylum. He was a man of great natural ability and personal charm, and from early days he made a speciality of diseases of the rectum. As Lecturer on Minor Surgery (1897-1901) and as Lecturer on Surgery (1909-1912) in Charing Cross Medical School he proved an attractive teacher, whilst on patients he had a peculiarly stimulating influence. For two years he was Dean of the Medical School and did much to further the Students' Club, of which he was Treasurer for many years. As the initiator and founder of the Union Jack Club for Soldiers and Sailors he became widely known outside his profession. He was Vice-President of the Club and received the honour of knighthood in 1911. In the midst of a very busy life he found recreation in golfing. Soon after he reached the age of fifty aortic disease began to make progress with increasing rapidity; he broke down whilst on a golfing holiday in France, returned home gravely ill, and died at 107 Harley Street. He married in 1890 the second daughter of H Aspinall, QC, Attorney-General of Victoria. Lady Wallis survived her husband with two daughters. Publications:- "Clinical Lectures on the Diagnosis and Treatment of Rectal Diseases," 12mo, London, 1902; reprinted from *Clin Jour*, 1902, xx. *His Surgery of the Rectum*, 8vo, London, 1907 (also a New York edition), and his *Surgery of the Rectum for Practitioners*, 8vo, London, 1912, embody his experiences in that subject. His other contributions included cases of abdominal surgery.