Note 447 — 1843.
Reading edition
Owing to a rumour that the castle at Dublin could be entered by a subterranean passage or sewer from the Liffey, colour-sergeant Lanyon was directed to explore it. He did so, and found that a strong iron grating existed in the passage, which would effectually prevent the supposed entrance. In this duty, being much exposed to the influence of noxious vapours, he soon afterwards was seized with fever and jaundice, which shortened his days.