On the 18th of May, we bade adieu to the Texas, amid the salutes of the several armed Texian vessels at Galveston, and were soon on the broad waters of the Gulf of Mexico. We had as passenger Mr CRAWFORD, the British Consul at Tampico; and after a pleasant voyage, anchored on the 24th within the south-west Pass of the Mississippi. After visiting Captain TAYLOR and his family at the Balize, we were towed by a steamer to New Orleans, where we arrived on the 27th. Here I had the gratification of meeting with my youngest brother-in-law, WILLIAM G. BAKEWELL, Esq. of Louisville, Kentucky, as well as with his amiable wife, neither of whom I had seen for several years. The commercial revolution which had taken place during our absence, prompted us to proceed at once to the eastward, and bidding farewell to our friends, I and my son set out for Charleston by way of Mobile, whence we crossed the country in a cart with the United States’ mail-bags, whereon, in lieu of downy beds and pillows, our bones rested in cramped positions during the night, whilst by day we had ample opportunities of walking over miserable roads, through an almost uncultivated country, and with very indifferent fare. On reaching Montgomery, however, we met with a good coach, and moved more rapidly toward our destination. My friend EDWARD HARRIS had parted from us, at New Orleans, and gone up the Mississippi to secure for me a collection of preserved Reptiles and other objects; but, after a more pleasant journey than ours, by way of Mobile, Pensacola, and the level country between the latter and Augusta in Georgia, joined us again at the house of our friend Dr BACHMAN, where we arrived on the 5th of June. And here, good-natured Reader, let me say to you, that the friendship which had so long subsisted between that reverend gentleman and myself, became, still more cemented by the marriage of his eldest daughter to my youngest son. In the course of our long journeys through woods and over plains, and of our sinuous sailings along the many bays, creeks or bayous, which we visited on this expedition, notwithstanding all our exertions and constant anxiety, we did not discover a single bird not previously known. However, the enterprise proved exceedingly interesting to my companions and myself, and I trust its results will be found to possess some value in your eyes also, for, as you will perceive, it has enabled me to speak with more confidence on the migratory movements of a good number of species which visit us from southern climes during the breeding season. It also enables me to define more accurately than I could otherwise have done, the geographical distribution of most of those which at various times make their appearance in the different sections of the United States, and other portions of North America.