ADVERTISEMENT.
            The following observations were thrown together as the result of communications with several gentlemen locally acquainted with the Isthmus of Panama, and who expressed to the writer their astonishment, that amidst the numerous undertakings, of more or less utility, which science has realised in our time, one so important to the whole commercial world, so easy of accomplishment, and so certain to be productive of ample remuneration to the undertakers, as a Ship Canal through that Isthmus, had not been taken up. The idle objection, that if practicable it would not have been left unattempted for the last three hundred years, they considered, would have no weight in an age in which we have seen accomplished works that in our fathers' time, nay, even within our own memory, it would have been considered madness to propose,—witness steam-navigation and railways. It is not twenty years since Dr. Lardner, the author of a popular work on the steam-engine, then supposed to be a most competent authority, declared in his lectures that the application of steam-navigation to the voyage across the Atlantic was a mere chimera. So it has been with railways. Would not any man who fifty, or even twenty years ago, had predicted that the journey from London to Exeter would be accomplished in five hours, have been deemed a fit tenant for Bedlam? To contend that because a great undertaking has remained unattempted for a long series of years, therefore it is impracticable, is to put a stop to all improvement. At the suggestion of the friends before referred to, the writer is induced to print the following pages, with the hope of drawing to the subject of which they treat the attention of the mercantile and shipping interests. If they awaken an interest in the subject in those quarters, they will not be thrown away, and he is fully convinced that the more the subject is examined the stronger will be the conviction of the practicability of the undertaking.