Thanks, bb. I think I must have about four copies of this at home in various guises (as a poem, in collected works etc), and have a particular soft spot for the one who was famed for the number of things he forgot when he entered the ship. Been there, done that!

What I can't remember is the essay in which LC describes how he came to write the poem, but for this thread the main point is clear: He didn't know what a snark was either!