Revenue 410,000 tons yearly, at 10_s._ L205,000 -------- Capital 1,000,000_l._ interest 5 per cent L50,000 Dividend in Stock 10 per cent 100,000 Expenses, management, and repairs 20,000 Surplus fund 35,000 ------- L205,000 -------- Thus affording from the outset a fair and profitable return, and which may reasonably be expected to be doubled in a very few years afterwards. _Conveyance Mails and Passengers._ Hitherto the matter has been considered entirely as relates to the practicability and probable expenditure to be incurred in carrying the Plan into effect, and the remuneration to be obtained from the Plan when completed. It yet remains to show the advantages which will be obtained in the courses and distances by this route, as compared with other routes, and also with the route by the North Pole--even were this latter practicable throughout the year, but which it almost certainly is not. It has elsewhere been shown how a communication across any part of this Isthmus, even by an ordinary road, can be made to extend, and to accelerate the mail communications between Great Britain and all the western coasts of America, and more especially with the most eastern parts of the eastern world, and her own rising empire in New Holland. Nothing calls forth the enterprize and the energies of mankind, equal to the rapidity and regularity of correspondence: and without this, no country can either improve or advance in cultivation or civilization. The comparative distances by the several lines of communication will stand as follow:--