which not only "drove" all the circular cleaning and buffing wheels, but an immense circular fan which kept the studio and sitters delightfully cool. Machinery and ingenuity did a great many things in Mr. Whipple's establishment in the early days of photography. Long before the Ambrotype days, pictures were taken on glass and thrown upon canvas by means of the oxyhydrogen light for the use of artists. At that early period of the history of photography, Messrs. Whipple and Black did an immense "printing and publishing" trade, and their facilities were "something considerable." Their toning, fixing, and washing baths were almost worthy the name of vats. Messrs. Masury and Silsby were also early producers of photographs in Boston, and in 1854 employed a very clever operator, Mr. Turner, who obtained beautiful and brilliant negatives by iron development. On the whole, I think Boston was ahead of New York for enterprise and the use of mechanical appliances in connection with photography. I sold my colours to most of the Daguerreotypists, and entered into business relations with two of the dealers, Messrs. French and Cramer, to stock them, and then started for New York to make arrangements for my return to England. When I returned to New York the season was over, and everyone was supposed to be away at Saratoga Springs, Niagara Falls, Rockaway, and other fashionable resorts; but I found the Daguerreotype galleries all open and doing a considerable stroke of business among the cotton planters and slave holders, who had left the sultry south for the cooler atmosphere of the more northern States. The Daguerreotype process was then in the zenith of its perfection and popularity, and largely patronised by gentlemen from the south, especially for large or double whole-plates, about 16 by 12 inches, for which they paid fifty dollars each. It was only the best houses that made a feature of these large pictures, for it was not many of the Daguerreans that possessed a "mammoth tube and box"--_i.e._, lens and camera--or the necessary machinery to "get up" such large surfaces, but all employed the best mechanical means for cleaning and polishing their plates, and it was this that enabled the Americans to produce more brilliant pictures than we did. Many people used to say it was the climate, but it was nothing of the kind. The superiority of the American Daguerreotype was entirely due to mechanical appliances. Having completed my business arrangements and left my colours on sale with the principal stock dealers, including the Scovill Manufacturing Company, Messrs. Anthony, and Levi Chapman.