a town and port in Mexico, on a bay of the Pacific Ocean, about 190 miles S.S.W. of Mexico, in Lat. 16° 50', N. Long. 99° 46', W. The harbour, which is one of the finest in the world, is easy of access, and the anchorage is so secure that heavily-laden ships can anchor close to the rocks which surround it. The town lies N.W. of the harbour, and is defended by the castle of San Diego, which stands on an eminence. During a part of the dry season the air is infected with the putrid effluvia of a morass eastward of the town. This, together with the heat of the climate, which ranges from 86 to 90 degrees Fahr., aggravated by the reflection of the sun's rays from the granite rocks that environ the town, renders it very unhealthy, especially to Europeans, though a passage cut through the rocks on the east side has