On the 1st of February, 1849, we embarked, at the foot of Arch Street, Philadelphia, on board the barque Thomas Walters, under command of Captain Marshman, for Tampico, thence intending to cross Mexico, and, re-embarking at Mazatlan, to proceed up the Pacific coast to San Francisco. Our company consisted of about forty persons, known as the Camargo Company. There were among them men from all the professions and pursuits in life--young and old, grave and gay, married and unmarried. After the usual amount of adventures, sea-sickness, and home-sickness, we arrived at Tampico on the 21st of February, where we were most happy to exchange the monotony, the junk and other salt provisions, and the green waves of a sea life, for the pleasing variety, the delicious fruits and vegetables, and the beautiful fields of a tropical climate. We must take our readers with us, first to the theatre of Tampico, where we went, not as spectators, but as actors upon its boards. The first night after our arrival we appeared upon its stage, performing our parts in the celebrated farce, the California Gold Diggers--a play which has since been performed a thousand times, and with unabated interest. To explain myself, our quarters, while in the city, were in the old theatre, the various rooms of which we occupied as sleeping and eating apartments. This city is pleasantly located upon an elevated promontory, being almost an island, having the River Panuco on the one side, and a lake upon the other. It contains about seven thousand inhabitants, many of whom are Americans. There are several large plazas or public squares, and some pleasant houses. The American consul, Captain Chase, took us to the spot where his heroic wife raised the American flag, and maintained it in spite of the threats of the Mexicans.