The practice of photography, like the aspects of the country and condition of the people, was changed. "Old things had passed away, and all things had become new." The shining silver plates, buffing wheels, coating boxes, mercury pans, &c., of the old dispensation had given place to the baths, nitrate of silver solutions, and iron developers of the new. Ambrotypes, or glass positives, and photographs on paper, had taken the place of the now antiquated Daguerreotype. Mammoth photographs were the ambition of all photographers. The first full-length life-sized photograph I ever saw was in Washington, and was the work of Mr. Gardner, the manager of Mr. Brady's gallery. But a more republican idea of photography, which, strange to say, originated in an empire not remarkable for freedom of thought, soon became the dominant power. Cartes-de-visite, the many, ruled over mammoth, the few. The price of mammoth photographs was beyond the reach of millions, but the prices of cartes-de-visite were within the grasp of all; and that, combined with their convenient size and prettiness of form, made them at once popular, and created a mania. The carte-de-visite form of picture became the "rage" in America about the time the civil war commenced, and as the young soldiers were proud of their new uniforms, and those who had been "in action" were prouder still of their stains and scars, the photographers did a good business among them, both in the city and in the camp. I saw a little of this "camp work" and "camp life" myself, and some of the havoc of war as well. Photographers are adventurous, and frequently getting into odd kinds of "positions," as well as their "sitters."