In all mail communications, such as those which are about to be considered, the point to be kept steadily in view, and one which is absolutely indispensable, is to connect and to bring the return mails and the outward together, in such a manner as that every intermediate place shall have the full benefit of both, without trenching upon the general interests, or occasioning any unnecessary detention or delay. This great and essential point is more particularly necessary to be attended to in the conveyance of mails by sea to distant parts, especially if conveyed by steam. In the quarters about to be noticed, the point alluded to will be shown to be more than in any other quarter necessary. Without this is effected, nothing beneficial is, in fact, effected; and to secure the object, a commanding power is obviously and indispensably necessary. For various reasons, which it is considered unnecessary here to state, steamers of 250-horse power each, will be found to be the best and most economical class of vessels to employ in the service contemplated.
The next and a still more important point to attend to, and to keep in mind, is to have always in readiness, and at well-selected stations, a sufficient quantity of coals to supply each boat: without such are at command, no movement can take place; and unless the supply is ample, and always at hand, no regular communication can ever be carried on. Wood, indeed, may be procured in some stations in the West Indies, but not in all; while even where it can be obtained, it will be found to be dearer than coal. The quantity also necessary for a vessel of large power, and for a voyage of any considerable length, would far exceed the room that could be afforded, in a vessel of properly regulated tonnage. A supply of coals, moreover, could be had at all the places to be brought into notice by care, and foresight, at moderate rates, and at the rates taken in the subsequent calculations. Merchant vessels, bound to all quarters, so soon as they perceived that they were sure of a market, would take a proportion of coals as ballast; and others would be glad to take a portion even beyond that, to aid them in completing their cargoes, instead of remaining, as vessels both at Liverpool, Glasgow, &c. frequently do, some time, till they can obtain a sufficient quantity of goods to enable them to do so: while such vessels could at all times furnish in this way a sufficient supply of coals, at moderate rates, and still afford to them a fair profit; such assistance in loading, by enabling vessels to sail at short and regularly stated periods, would become of the most essential service to the commercial interests of this country.
The time hitherto occupied by steamers in taking in coals, in almost every place, has constituted of itself a considerable drawback on steam navigation: it may, to a great extent, be avoided. Let carriages, such as are used on the railroads for carrying coals at Newcastle, &c. be constructed with iron handles. These may be made to hold one and a half, or two tons of coals (either of these weights, it is supposed, might be hoisted into a vessel without difficulty), and be all filled and placed on a raft or punt ready at each depôt, thirty to sixty in number, according to its importance, awaiting the arrival of the packet steamer. The moment she comes into port, the punt will be alongside, and the whole will be hoisted in in a few hours, the place for receiving them being always, and during the voyage, prepared for them. In this way 120 tons of coals may be taken in within a very short space of time; the buckets first emptied, refilled, and emptied again, to a considerable extent, in a period of no great additional time. At smaller depôts and ports, the steamer might hoist in thirty or forty tons of coals during her shorter time of stoppage; and thus steamers, without any material delay, would always have a sufficient and certain supply of fuel. The coals at all the depôts should be well covered and protected from the sun.
Further, on this head, most of the small coal (the best) which goes to waste at the depôts, may be saved by the following simple process:—Let it be mixed with a little clay, considerably diluted, then made into small balls, and afterwards dried in the sun (a rapid process within the tropics), and then taken on board with the others when wanted. It burns with great force. It is so used on estates in the West Indies for Stills. The saving is great, and the labour of making it up exceedingly light. A child may almost perform it.
It is necessary to observe, that steam-boats for the torrid zone must be fitted up and out in a manner considerably different, more especially in their hatches, from the best and most splendid boats in this country. For the convenience and health of both the passengers and crews, those for the torrid zone must, in every part, be more roomy and airy, yet so constructed as to be closed in the speediest and securest manner in the event of a hurricane; consequently they will require less expense in building, and fitting up of cabins, &c. than the crack boats in this country, in order to make them so.
In all the distances stated, there are, be it observed, included in the time allowed, three or four hours to land and take in mails and passengers at every place where the steamers may have to touch; and at the more important stations, at least six hours beyond the longer periods allowed for stoppages for coals and mails, &c. It will be necessary to give six or eight hours at Barbadoes before the departure of the steamer, that Government despatches may be forwarded. In fact, the steamer should always, and only leave that island at sun-rise on the day following that whereon the packet arrived from England, because by doing so, it would reach St. Thomas at daybreak on the second morning (the navigation at that island is rather dangerous during the night), clear it, and reach St. John's, Porto Rico, with daylight, and in consequence Cape Nichola in daylight also, on the second day thereafter.
The old Galatea frigate might be carried up from Jamaica and moored at Cape Nichola Mole, on board of which those mails and specie may be deposited, that require to be disembarked from such steamers, &c., as cannot be detained till the packet arrives to receive them. This, however, will seldom be the case, nor to any great extent; as the homeward-bound packet, whether steamer or sailing-vessel, will almost always be at Cape Nichola before the steamer gets up from the leeward. She may also be used to hold coals for a supply for the steamer to a certain extent.
Let the fact be urged in the strongest manner, that a communication once a month, to any given place, will never pay, nor answer any great or good purpose. Mails, or rather letters and passengers, will not wait for such a length of time, especially when these could, as for example from the Havannah, almost be in England, by way of New York, in the interval that would elapse between the departure of one packet and another, when there was only one packet in the month; but give two each month, and neither could ever be so.
The arrangements, and the extent of the internal Post-office establishments of Great Britain, are upon the most splendid and efficient footing. There is nothing of a similar kind in any other country, either in management, or combination, or regularity, that can equal or even be compared to them. It is, however, much otherwise with all her transmarine mail communications. They are all particularly deficient in combination, limited in their operations, and inefficient as regards the machinery employed to carry the mails. This, in a more particular manner, is the case with the West Indies: the small sailing vessels there employed are generally very unfit for such a service, and the steamers sent out to work them, with the exception of the Flamer, being only of 100-horse power, and besides badly constructed, are wholly unfit for the service in any way; and even the vessel named, which is 140-horse power, though much superior to any of the other three, the Carron, the Echo, and the Albyn, is still too small to perform her work in proper and reasonable time, or to stem the currents and trade winds, to say nothing of tempests, which, as regards the two former, constantly prevail in the seas in that quarter of the world.
It may also be remarked, that to extend or to add to the number of post communications, does not add proportionally to the machinery necessary for the conveyance of these: in other words, if the communications are doubled in number, the machinery used for conveyance is not necessarily doubled, nor the expense consequently doubled. Take, for example, the station between Barbadoes and Jamaica: with two mails each month, this could not be effected with fewer than three steam-boats; but the same number of steamers will, without inconvenience, extend the communication to Havannah, and take in, at the same time, several important places extra. A judicious and proper combination and regularity in all movements can, with the same machinery, and with but little additional expense, perform, in some instances double, and in many instances nearly double work.