Many of the rivers are navigable for short distances. The longest is the Cauto, in the eastern department, which, rising in the Sierra del Cobre, passes between Holguin and Jiguani, and empties on the south coast a little north of Manzanillo. It is navigable for half its length, between fifty and sixty leagues. The river Ay has falls in its course two hundred feet high, and a natural bridge spanning it, nearly as remarkable as that of Virginia. The Sagua le Grande is navigable for five leagues, and the same may be said of the river Sasa. The Agabama, emptying on the south coast near Trinidad, is also partially navigable. There are two hundred and sixty rivers in all, independent of rivulets and torrents. So abundantly is the island supplied with fresh-water springs, especially on the south side, that the pure liquid filters through the fissures of the stratified rock in such quantities as to form, by hydrostatic pressure, springs in the sea itself some distance from the shore. The sulphurous and thermal springs of San Diego are the resort of numerous invalids annually, who come hither from Europe and America.

The coast and harbors of Cuba are carefully marked for the purpose of navigation by eighteen well-placed lighthouses, visible from fifteen to twenty miles at sea, according to the importance of the surrounding points. That which stands in Moro Castle, on the south side of the harbor's entrance at Havana, is eighty feet in height and about a hundred and fifty from the level of the sea. It is visible in clear weather twenty miles from shore. In honor of a former Governor-General this lighthouse bears the inscription "O'Donnell, 1844," in mammoth letters. So plain and safe is the entrance to this harbor, which in the narrowest part is some hundred yards wide, that a pilot is hardly necessary, though foreign vessels generally take one. There is little or no tide on this part of the coast, the variations never exceeding two feet. No regular ebb and flow is therefore observable, but when the land breeze rises there is a very slight tide-way setting out of the harbor. No country in the world of the size of this island has so many large and fine harbors. They number twenty-nine on its northern side and twenty-eight on the southern. The well-defined water-line along the yellow, rusty rocks of the coast shows the mark of ages, and also that there has been no upheaval since the land took its present shape. Where there are no regular harbors the shore is indented with numerous deep channels forming inlets, safe only for native boatmen, as the winding course of the blue waters covers myriads of sunken rocks. On the southern side, opposite the Isle of Pines, there are some beautiful reaches of beach, over which the gentle surf rolls continuously with a murmur so soft as to seem like the whispered secrets of the sea. Yet what frightful historic memories brood over these deep waters of the Archipelago, where for nearly two centuries floated and fought the ships of sea-robbers of every nationality, and where the cunning but guilty slave-clippers, fresh from the coast of Africa, loaded with kidnapped men and women, made their harbor! With all their dreamy beauty, the tropics are full of sadness, both in their past and present history.

The occasional hurricanes, which prove so disastrous to the Bahamas and other isles in the immediate vicinity of Cuba, rarely extend their influence to its shores, but the bursts of fury which these usually tranquil seas sometimes indulge in are not excelled in violence in the worst typhoon regions.

The nearest port of the island to this continent is Matanzas, lying due south from Cape Sable, Florida, a distance of a hundred and thirty miles. Havana is located some sixty miles west of Matanzas, and it is here that the island divides the entrance to the Gulf of Mexico, whose coast-line, measuring six thousand miles, finds the outlet of its commerce along the shore of Cuba, almost within range of the guns in Moro Castle. Lying thus at our very door as it were, this island stands like a sentinel, guarding the approaches of the Gulf of Mexico, whose waters wash the shores of five of the United States, and by virtue of the same position barring the entrance of the great river which drains half the continent of North America. Nor does the importance of the situation end here. Cuba keeps watch and ward over our communication with California by way of the isthmus. The peculiar formation of the southeastern shore of this continent, and the prevalence of the trade-winds, with the oceanic current from east to west, make the ocean passage skirting the shore of Cuba the natural outlet for the commerce also of Venezuela, New Granada, Costa Rica, and Nicaragua. It is not surprising, therefore, when we realize the commanding position of the island, that so much of interest attaches to its ultimate destiny.

Cuba seems formed to become the very button on Fortune's cap. No wonder that the Abbé Raynal pronounced it to be the boulevard of the New World, or that the Spanish historian called it the fairest emerald in the crown of Ferdinand and Isabella. Under any other government in Christendom than that of Spain, the island would to-day have been one vast smiling garden, for its natural advantages are absolutely unequaled. To oppress and rob its inhabitants has been the unvarying policy of the home government from first to last. The undisguised system has been to extort from them every farthing possible in the way of taxes. No legitimate business could sustain itself against the enormous exactions of the Spanish rule. Coffee and cotton planting have been absolutely driven out of the island by the taxes imposed upon their production. In short, the mother country has carried her system of oppression and despotism in Cuba to the utmost stretch of human audacity.

Probably no place has a finer or more desirable climate than has the main portion of Cuba, with the clear atmosphere of the low latitudes, no mist, the sun seldom obscured, and a season of endless summer. We do not wonder that the Northern invalid turns instinctively towards so inviting a clime, where Nature in all her moods is so regal. The appearance of the sky at night is far brighter and more beautiful than at the North. The atmosphere does not seem to lose its transparency with the departure of the day. Sunset is remarkable for its soft mellow beauty, all too brief to a New England eye accustomed to the lingering brilliancy of our twilights. For more than half a century the island has been the resort of invalids from colder climes in search of health, especially those laboring under pulmonary affections. Such have rarely failed to realize more or less benefit from the mild and equable temperature. The climate so uniformly soft and soothing, the vegetation so thriving and beautiful, the fruits so delicious and abundant, give it a character akin to fairyland. Here Nature seems ever in a tender, loving mood, the very opposite of her cold temperament at the North.

The best time to visit the island, for those who do so in search of health, is from the beginning of January to the middle of May. It is imprudent to remain in the cities of Cuba later than the latter period, as the fever season then commences. The invalid will find that very many physical comforts, and some things deemed imperative at home, must be sacrificed here as quite unattainable: such, for instance, as good beds, strict cleanliness, good milk, and sweet butter. The climatic advantages must suffice for such deprivations. During the greater portion of the year it is dry and hot, the rainy season commencing in June and ending in September. The northeast trade-winds blow over the island from March to October, and though it is especially important to avoid all draughts in the tropics, still one can always find a sufficiently cool and comfortable temperature somewhere, when the trade-wind prevails. To persons in the early stages of consumption this region holds forth great promise of relief; the author can bear witness of remarkable benefit having been realized in many instances. At the period of the year when New England invalids most require to avoid the rigors of the prevailing east winds, namely, in February, March, April, and early May, the island of Cuba is in the glory of high summer, and enjoying the healthiest period of its annual returns. When consumption originates in the island,—as was also found to be the case at Nassau,—it runs its course to a fatal end with such rapidity that the natives consider it to be a contagious disease. Early in May the unacclimated would do well to leave, taking passage up the Gulf to New Orleans, or across the Gulf Stream, which here runs thirty-two miles in width, to Key West, Florida, thence by boat to Tampa Bay, and by railroad to Sanford, and by the St. John's River to St. Augustine, enjoying a brief stay at the latter places, where every requisite convenience can be enjoyed. Jacksonville should not be missed, and by coming north thus slowly and pleasantly, the change of climate is not realized, and June weather will greet the returning traveler with genial warmth.

Owing to the proximity of the northwestern part of Cuba to our own continent, the climate is somewhat variable, and at a height of five hundred feet above the level of the sea, ice is sometimes, though rarely formed; but, as has already been said in these notes, snow never falls upon the island. At long intervals Cuba has been visited by brief hailstorms, and persons who tell you this will add, "but we never have known it in our day." In the cities and near the swamps, the yellow fever, that scourge of all hot climates, prevails from the middle of June to the last of October; but in the interior of the island, where the visitor is at a wholesome distance from humidity and stagnant water, it is no more unhealthy than our own cities in summer. It is doubtful if Havana, even in the fever season, is any more unhealthy than New Orleans at the same period of the year. Fevers of different degrees of malignity prevail from May to November, and occasionally throughout the year. Among these the yellow fever is the most dangerous, and sooner or later all resident foreigners seem to suffer from it, as a sort of acclimation; once experienced, however, one is seldom attacked a second time. In the ports yellow fever is often induced by carelessness and exposure; excesses on the part of foreign sailors are frequently the cause of its fatal attack upon them. The thermometer is never known to rise so high in Havana or Santiago, the opposite extremes of the island, as it does sometimes in New York and Boston. The average temperature is recorded as being 77°, maximum 89°, minimum 50° Fahrenheit. We have been thus elaborate as regards this matter because it is of such general interest to all invalids who annually seek an equable clime.

The principal cities are Havana, with a population of nearly three hundred thousand; Matanzas, with fifty thousand; Puerto Principe, thirty thousand; Cienfuegos, twenty-five thousand; Trinidad, fourteen thousand; San Salvador, ten thousand; Manzanillo, Cardenas, Nuevitas, Sagua la Grande, and Mariel. Among its largest and finest harbors those of Havana, Santiago de Cuba, Nipe, and Nuevitas are the best; the bay of Matanzas is also large, but shallow. This city stands next to Havana in population, but not in commercial importance. It is said to be healthier than the capital, but it lacks those attractions of life and gayety which are essential even to invalids to render them contented. The streets are wide, and many of the Moorish characteristics of Spanish cities, so common in both this island and the European peninsula, are wanting here. It was built much later and more under foreign direction than Havana. The secret of the superior health of Matanzas over that of the capital is undoubtedly because of its better drainage and general cleanliness.

Located in one of the most fertile portions of the island, the city extends up the picturesque and verdant hills by which the bay is surrounded, in the form of an amphitheatre. The fortifications are of rather a meagre character, and could not withstand a well organized attack for half an hour. Modern improvements in the construction of heavy guns and projectiles have rendered all the forts in Cuba of no importance as a means of defense against a first-class invading fleet. The custom house is the most prominent building which strikes the eye on approaching the city by water; though built of stone, it is only one story in height, and was erected at the commencement of the present century. On the heights above the city the inhabitants have planted their country seats, from whence the view of the widespreading bay forms a delightful picture. The climate is thought to be especially adapted for the cure of throat and lung diseases, and the city is annually resorted to by those seeking relief from these troubles, as also by those afflicted with neuralgia and rheumatism. The first land made by southern-bound steamers from Boston and New York is the Monte del Pan, or Bread Mountain, forming a lofty background for the city. There are three large churches in Matanzas, a well appointed and spacious theatre, a bull-ring, and cock-pits. Statistics show that the custom-house receipts of the port reach about two million dollars annually. There are two railroads connecting the city with Havana, one of which runs also to the interior southeasterly to Cienfuegos, Sagua, and Villa Clara, intersecting a rich sugar-producing country, from whence it brings a large amount of freight to the coast for shipment. On these Cuban roads one rides in American-built cars, drawn by American engines, and often run by American engineers. Railroads were in use in Cuba before they were adopted in any other Spanish-speaking country, and there are now nearly a thousand miles in active operation on the island.