_Philadelphia, Sept. 16th._--The climate just now is delicious; and these clean quiet streets, with the trees which shade them, have all the freshness of spring. Many Southern strangers are here, enjoying the delightful residence this city affords at this season of the year. Chestnut-street, if not so crowded, quite as gay as Broadway just now, being daily filled with pretty women. Theatre crowded. _24th._--Colonel B----ke and his family arrived _en route_ for Washington, which they are desirous of visiting previous to their departure for England. It is a pity they are so late in the season, or rather so early: the capital is deserted now, and hot as Jamaica; even our hospitable minister, Sir Charles, has not yet, I fancy, resumed his good housekeeping. _25th._--Had the pleasure of driving Mrs. B----ke and Miss M----e to the works at Mount Pleasant, and thence along the south bank of the Schuylkill: the day was sunny, yet not over warm; the river and its beautiful banks were never seen to greater advantage; the foliage, just touched by the hand of Autumn, was changing fast, not "into the sear and yellow leaf," but into the most lovely livery in which nature ever dressed her forests; I had the satisfaction of hearing my favourite haunt sufficiently lauded by the whole party. Dined with Colonel B----ke. _27th._--After a long ride in the morning, accompanied Colonel B----ke and ladies to dinner at Mrs. W----gs. In the evening, a small party, with music. A sister of our hostess, Madame P----t, who is an accomplished musician, sang some duets with Count S---- in excellent taste; and we had Mrs. W----gs' harp in perfection. She is certainly the best lady harpist I ever heard; her taste and feeling are both good, her execution certain and brilliant, and her touch nearly as firm, if not quite so vigorous, as Bochsa's, whose pupil indeed she is; and infinite credit does she do her master. Is it that music is more cultivated as a science in Philadelphia, or that I have chanced to light upon a more musical circle here than it has been my fortune to encounter elsewhere? Certain it is, I have not, in the other great cities, met any women whose musical education appears so exceedingly good, though a love for the art, I should say, is general throughout the country. _28th._--At seven A.M. left Chestnut-street for Baltimore. Whilst steering through the waters of the Chesapeake, perceived a large steamer standing right for us, with a signal flying. Learned that this was the Columbus, bound for Norfolk, Virginia, for which place we had several passengers, who were now to be transhipped to the approaching vessel. We were out in the open bay, with half a gale of wind blowing, and some sea on; it therefore became a matter of interest to observe how two large ships of this class would approach each other.