|I’ve yet to find an image of the book, but here’s a Christchurch church where Watson was a minister (lostchristchurch.org.nz).|| || The Decline and Fall of the British Empire,|
or The Witch’s Cavern
aka The Witch’s Cavern. A Realistic and Thrilling Picture of London Society
by Henry Crocker Marriott Watson
First publication: 1890
William Furley, an Australian in 2992, describes the fallen state of the British Empire and then travels to England where he meets a version of Alice’s White Rabbit and falls down a hole to 1890 London where he tries to warn people about the coming collapse.