It's satire. From the article, last paragraph: The London and Edinburgh Vacuum Tunnel Company report is accompanied by a small notice: "The foregoing Jeu d'Esp

It's satire. From the article, last paragraph: The London and Edinburgh Vacuum Tunnel Company report is accompanied by a small notice: "The foregoing Jeu d'Esprit appeared in a recent number of the Edinburgh Star, and being well calculated to throw ridicule upon some of the preposterous plans now before the public for the investment of money, we insert it in the Register".