The principal Towns in New-Brunswick are SAINT JOHN, FREDERICTON, and SAINT ANDREWS; which on account of their importance and situation will be treated of separately. Leaving the other places to be noticed as they occur in the description of the several Counties, I shall proceed to give a short description of the situation, trade, public buildings, and institutions of the places just mentioned; commencing with the CITY OF SAINT JOHN. The City of St. John is situated in the county of that name, on a rocky peninsula at the estuary of the river St. John, in lat. 45 deg. 20' north, long. 66 deg. 3' west. The city comprehends both sides of the river. The district on the eastern side of the harbour, formerly called the township of Parr, and Carleton on the western side. It is divided into six wards, two of which are in Carleton and four in St. John, properly so called. It contains, according to the late census, 8,488 inhabitants of all descriptions. Like most English towns, the streets in St. John intersect each other at right angles. They are in some parts well built up, the houses being of different heights and joining each other for some distance, forming several fine ranges of buildings. The first houses in this place were constructed of wood, many of them were low and ill shaped. These when removed by fires or other causes, are generally replaced with handsome brick buildings, which is making a great improvement in the appearance of the city. The streets, likewise, which were formerly nearly impassable from rocks, hills and chasms, are rapidly improving; hollows have been filled up, and rocks cut away; so that although the hills in some parts are still steep, yet carriages drive through most part of the city with the greatest safety. A projecting point near the entrance of the harbour, has caused the different parts of the city to be distinguished by the name of the upper and lower coves; the latter of which has been much neglected till lately, Government having built a handsome range of Barracks on the point fronting the Bay of Fundy, and removed the troops, &c. from Fort Howe to that station, it is beginning to improve. Most all the trade of the city is carried on in the upper part of the town, where there are a number of warehouses, stores, wharves, and other conveniences for lading and unlading ships. The tides rise to such a height that large ships can lay at the wharves and discharge with the greatest safety.