This appears to refer to the three papers published in the first half of 1896 by Sigmund Freud.
The papers of the late Mycroft Holmes from which this account is derived do not date events. They were originally filed in an order that would have made their timing self evident to their maker. Sadly this arrangement was lost in the Blitz, when some of the papers were destroyed and all were scattered. Robert Louis Stevenson died on 3rd December 1894; this, and the earlier reference to Freud suggests that this account dates from 1897 at the earliest.
Mycroft is perhaps here referring to the definition of rational as opposed to superstitious in Hume’s Of Suicide unpublished in the philosopher’s lifetime except as an anonymous private pamphlet.
There is some possibility that this is not a compliment; Mycroft’s papers almost never use the term “ingenious” except in the sense it is used in Ambrose Bierce’s story “The Ingenious Patriot” (1899) where it signifies a technically adept individual with no grasp of the long-term consequences of his actions. This does not, however, in itself date the action to after 1899, as this usage of the word – which is essentially sarcastic – did not originate with Bierce.
Patrick Bowles-Lyon, thirteenth Earl of Strathmore and Kingshorne.
William Renshaw and Earnest Renshaw defeated the earl and his partner Sir Herbert Wilberforce: 2-6, 1-6, 6-3, 6-4, 6-3.
While gun barrel rifling began in the sixteenth century in Germany, the end of smoothbore musket usage by the British Army was considerably delayed. The “Brown Bess” musket was in use until 1838, and the percussion-cap musket that replaced it also did not have a rifled barrel and remained in use until 1851.
Designed by David Riddal Roper for Thomas Malby & Co in 1826, the tower was still in use as late as 1949.
Colonel James Moriarty, though formerly in the Indian Army, was at this time employed as a railway station master. That his brother had the same name as him must have been confusing, but it is possible that they were referred to as James Senior and James Junior respectively, by a father more than usually obsessed with order and regimentation.