thence to Halifax, in Nova Scotia, there would be another run of 550 miles, and from that to New York would not exceed the admissible range; but touching at Halifax would be desirable for the sake of passengers. The only difficulty would be as to the run from Valentia to St. John’s; and the voyage from Dublin to Bordeaux and back, a distance of between 1,600 and 1,700 miles, with the same stock of coals, came very near this distance. It must be observed that westerly gales blew almost all the year round across the Atlantic. They were produced by the trade winds being the compensating cause that restored the balance which these served to destroy, according to that beautiful principle in nature which always provides a remedy for any derangement in the deranging cause itself. As a last resource, however, should the distance between Valentia and St. John’s prove too great, they might make the Azores a stage between, so that there remained no doubt of the practicability of establishing a steam intercourse with the United States. As to the project, however, which was announced in the newspapers, of making the voyage directly from New York to Liverpool, it was, he had no hesitation in saying, perfectly chimerical, and they might as well talk of making a voyage from New York or Liverpool to the moon. The vessels which would ultimately be found the best adapted for the voyage between this country and the United States would be those of 800 tons, which would carry machines of 200 horse-power, and would be able to stow 400 tons of coal. To supply a 10 horse-power daily required an expenditure of a ton of coals, and, consequently, 200 horse-power would require 20 tons of coal daily; but if the vessel carried 400 tons of coal only, it would not be practicable to undertake a voyage which would require the whole of the quantity. They must make an allowance of 100 tons for contingencies. Thus, in reckoning the average length of the voyage which might be undertaken by such a vessel, we might safely calculate upon 300 tons of coal, which would be sufficient for 15 days, and it might fairly be concluded that any project which calculated upon making longer voyages than 15 days without taking in a fresh supply of coals, in the present state of the steamboat, must be considered chimerical. Now, the average rate of speed of the Mediterranean packets was 170 miles per day, and the utmost limit of a steam voyage might be taken at 2,550 miles; but even that could not be reckoned upon.” In justice to the memory of Dr. Lardner, it is only fair to state that, in the eighth edition of his “Steam Engine, &c.,” 1851, pp. 294-309, he denies that he ever stated that “a steam voyage across the Atlantic was a physical impossibility.”