The city of New York, the largest and most important in the United States, is situated in New York County, on Manhattan Island, at the mouth of the Hudson River, eighteen miles from the Atlantic Ocean. The city limits comprise the entire county of New York, embracing Manhattan Island, Randall's, Ward's, and Blackwell's Islands, in the East River, and Governor's, Bedloe's, and Ellis' Islands, in the bay. The last three are occupied by the military posts of the United States Government. Manhattan Island is bounded on the north by Spuyten Duyvel Creek and the Harlem River--practically the same stream; on the east by the East River, on the west by the Hudson, and on the south by New York Bay. It is nine miles long on the east side, thirteen and a half miles long on the west side, and two and a half miles wide at its greatest breadth, the average breadth being a mile and a half. It is but a few feet in width at its southern extremity, but spreads out like a fan as it stretches away to the northward. The southern point is but a few inches above the level of the bay, but the island rises rapidly to the northward, its extreme northern portion being occupied by a series of bold, finely wooded heights, which terminate at the junction of the Hudson River and Spuyten Duyvel Creek, in a bold promontory, 130 feet high. These hills, known as Washington Heights, are two or three miles in length. The southern portion of the island is principally a sand-bed, but the remainder is very rocky. The island covers an area of twenty-two square miles, or 14,000 acres. It is built up compactly for about six miles, along the east side, and irregularly to Harlem, three miles farther. Along the west side it is built up compactly to the Central Park, Fifty-ninth street, and irregularly to Manhattanville, One hundred and twenty-fifth street, from which point to Spuyten Duyvel Creek it is covered with country seats, gardens, etc. Three wagon, and two railroad bridges over the Harlem River connect the island with the mainland, and numerous lines of ferries afford communication with Long and Staten Islands, and New Jersey. The island attains its greatest width at Fourteenth and Eighty-seventh streets. The city is finely built, and presents an aspect of industry and liveliness unsurpassed by any place in the world. Lying in full sight of the ocean, with its magnificent bay to the southward, and the East and Hudson Rivers washing its shores, the city of New York possesses a climate which renders it the most delightful residence in America. In the winter the proximity of the sea moderates the severity of the cold, and in the summer the heat is tempered by the delightful sea breezes which sweep over the island. Snow seldom lies in the streets for more than a few hours, and the intense "heated terms" of the summer are of very brief duration. As a natural consequence, the city is healthy, and the death rate, considering the population, is small.