There are known to be organized juntas of revolutionists at Key West, Florida, in Hayti, and also in New York city, whose designs upon the Cuban government keep the authorities on the island in a state of chronic alarm. A revolutionary spirit is felt to be all the while smouldering in the hearts of this oppressed people, and hence the tyrannous espionage, and the cruelty exercised towards suspected persons. So enormous are the expenses, military and civil, which are required to sustain the government, under these circumstances, that Cuba to-day, notwithstanding the heavy taxes extorted from her populace, is an annual expense to the throne. Formerly the snug sum of seven or eight millions of dollars was the yearly contribution which the island made to the royal treasury, after paying local army, navy, and civil expenses. This handsome sum was over and above the pickings and stealings of the venal officials. As to the Cuban sympathizers at Key West, Florida, a recent visit to that port, just opposite to the island on the hither side of the Gulf Stream, showed us that they formed a large proportion of the population of that thrifty American town. On a day which was the anniversary of some patriotic occasion relating to the island, hundreds of Cuban flags (the single star of free Cuba) were seen displayed upon the dwellings and public places. There are believed to be two thousand Creoles residing here, who have either been expelled from the island for political reasons, or who have escaped from thence as suspected patriots. These people are very generally engaged in the manufacture of the well-known Key West cigars. The Spanish army is governed with an iron hand. Military law knows no mercy, and it is always more or less a lapse into barbarism where it takes precedence. The ranks are filled by conscription in Spain, and when the men first arrive at Havana they are the rawest recruits imaginable. Soldiers who have been doing garrison duty are sent inland to fill the decimated ranks of various stations, and room is thus made for the recruits, who are at once put to work, enduring a course of severe discipline and drill. They land from the transports, many of them, hatless, barefooted, and in a filthy condition, with scarcely a whole garment among a regiment of them. The writer could hardly believe, on witnessing the scene, that they were not a set of criminals being transported for penal servitude. Fatigue dresses no doubt awaited them at the barracks, and after a while they would be served with a cheap uniform, coarse shoes, and straw hats. They are like sheep being driven to the shambles, and are quite as helpless. Twenty-five per cent, and upwards of these recruits are usually under the sod before the close of a twelve-month!