Sherlock Holmes Society of London: The visitors were Residential Guests at Christ Church (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: One of Christ Church College's official guides (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Tom Tower, designed by Christopher Wren in 1681-1682, is the gatehouse and main entrance to Christ Church College (photo by Rakshita Patel)
Sherlock Holmes Society of London: Tom Quad, Christ Church - the largest college quadrangle in the university, begun by Cardinal Wolsey in 1525, before his fall from power (photo by Rakshita Patel)
Sherlock Holmes Society of London: In the centre of Tom Quad is an ornamental pond with a fountain surmounted by a statue of Mercury. Rising above the buildings behind it is the steeple of Christ Church Cathedral (photo by Rakshita Patel)
Sherlock Holmes Society of London: The statue of Mercury, donated by by Harold Bompas in 1928 and restored in 2023, is a lead version of Giovanni da Bologna's bronze statue in the Louvre (photo by Helen Dorey & Marcus Geisser)
Sherlock Holmes Society of London: The base of the Mercury Fountain in Tom Quad was designed by Sir Edwin Lutyens (photo by Rakshita Patel)
Sherlock Holmes Society of London: Tom Quad takes its name from the famous bell, Great Tom, housed in Tom Tower (photo by Tom Atkinson)
Sherlock Holmes Society of London: Tom Tower, Christ Church surmounts the main entrance to the college. The tower houses the famous bell, Great Tom (photo by Helen Dorey & Marcus Geisser)
Sherlock Holmes Society of London: Peckwater Quad, Christ Church was designed by Henry Aldrich and built between 1706 and 1711 (photo by Helen Dorey & Marcus Geisser)
Sherlock Holmes Society of London: Blue Boar Quad, Christ Church makes a striking modernist contrast to the elegance of Tom Quad and Peckwater Quad (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: On the walls around Peckwater Quad, the college's sporting victories are rather elegantly commemorated (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Liddell Gate, between Peckwater Quad and Tom Quad, is named for Henry Liddell (1811-1898), Dean of Christ Church and Vice-Chancellor of Oxford University. His daughter Alice inspired "Alice in Wonderland" (photo by Stephen Wallace)
Sherlock Holmes Society of London: En route to a drinks reception in the Research Centre, a modern thatched barn in Christ Church Meadow, fitted for conferences and lectures (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Yes, we're heading in the right direction for drinks and a lecture! (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: We arrive at Christ Church College Research Centre (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: And there's time for a refreshing Amber Ale! (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Chairman Calvert Markham and co-organiser Marcus Geisser smile for the camera (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Stephen Wallace, Catherine Cooke and Tom Atkinson are ready to party! (photo by Giles, courtesy of Stephen Wallace)
Sherlock Holmes Society of London: And Mark Jones is ready to give the first lecture of the weekend (photo by Stephen Wallace)
Sherlock Holmes Society of London: Mark Jones's lecture centres upon one of the late stories in the Holmes canon, "The Creeping Man" (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: The story of the eccentric Professor Presbury is one of the strangest of Dr Watson's accounts (photo by Stephen Wallace)
Sherlock Holmes Society of London: Whether "The Creeping Man" is a weak addition to the Holmesian canon, or a powerful one, is really a matter of opinion (photo by Stephen Wallace)
Sherlock Holmes Society of London: Frederic Dorr Steele created wonderfully atmospheric illustrations for "The Creeping Man" in 1923 for Hearst's Magazine (photo by Stephen Wallace)
Sherlock Holmes Society of London: Dr Charles-Édouard Brown-Séquard (1817-1894) was a pioneer endocrinologist and neurophysiologist (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: At the age of 72, Dr Charles-Édouard Brown-Séquard claimed rejuvenated sexual prowess after subcutaneous injection of extracts of animal testicles (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Dr Serge Voronoff (1866-1951) was a French surgeon of Russian descent, and a great self-promotor (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Known as "the Monkey Gland King", Voronoff believed that aging could be halted or even reversed by transplanting monkey testicles into human beings (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Inspired by Dr Voronoff's experiments, a plan was devised to establish "a vast breeding ground for anthropoid apes" in west Africa, with associated scientific laboratories (photo by Sonia Yazmadjian)
Sherlock Holmes Society of London: Austrian physiologist Eugen Steinach's simple, vasectomy-like operation was perhaps the most popular of the many glandular techniques devised to revitalise the aged (photo by Sonia Yazmadjian)