Wet and wretched was the morning after the battle. The heavens seemed to weep over the disgrace as the men poured into the city, singly and in groups, unofficered, and without their firearms, which many had lost, or thrown away in their flight. The citizens gathered round them, anxious to learn all about the defeat, and the whereabouts of the Confederate army, and invited them into their houses to take refreshment and rest. Several instances of this impromptu hospitality and sympathy I witnessed myself; and many of the weary and wounded soldiers I talked to. They that were only slightly wounded in the hands and arms had their wounds washed and dressed by the wives and daughters of many of the residents. The hotels were crowded, and the "bars" were besieged by the drenched and fatigued soldiers, whom the curious and sympathizing citizens invited to "liquor." The men all told wonderful stories of the fight and of their own escape, but none could tell satisfactorily what had created the panic. Some said that a few "teamsters" took the alarm, and, riding to the rear in hot haste, conveyed the impression that an exterminating pursuit by the Confederates had commenced. In a day or two the majority of the men were mustered together again, and occupied their old camping grounds, where I visited them, and heard many of their stories, and got some of the relics of the battle field. Fresh troops were raised, and placed under the command of another general. But it was long before another "onward march to Richmond" was attempted. The North had learned something of the strength and prowess of the South, and began to prepare for a longer and fiercer struggle with "Secession." Such are the two pictures of the Potomac which I have endeavoured to reproduce, and which fell under my observation during my professional peregrinations in connection with the practice of photography. RAMBLES AMONG THE STUDIOS OF AMERICA. Boston. My impressions of America, from a photographic point of observation, were taken at two distinct periods--which I might call the two epochs of photographic history--the dry and the wet; the first being the Daguerreotype, and the second what may be termed the present era of photography, which includes the processes now known and practised. I take Boston as my starting point for several reasons. First, because it was the first American city I visited; secondly, it was in Boston that the change first came over photography which wrought such a revolution in the art all over the United States; thirdly and severally, in Boston I noticed many things in connection with photography which differed widely from what I had known and practised in England.