... New Orleans, Sept. 4, 1845. I arrived here to-day about 2 P. M., very well in health and much improved in spirits. The city is as yet perfectly healthy, and I find here a vessel loading for Aransas Bay , which will probably leave to-morrow afternoon; I have therefore a chance of getting out of this pestilential hole unharmed. I had a tedious, though, on the whole, a pleasant journey here. I wr...