In the Canadian City I did not find business very lively, so after viewing the fine Cathedral of Notre Dame, the mountain, and other places, I left Montreal and proceeded by rail to Boston. The difference between the two cities was immense. Montreal was dull and sleepy, Boston was all bustle and life, and the people were as unlike as the cities. On my arrival in Boston, I put up at the Quincy Adams Hotel, and spent the first few days in looking about the somewhat quaint and interesting old city, hunting up Franklin Associations, and revolutionary landmarks, Bunker Hill, and other places of interest. Having satisfied my appetite for these things, I began to look about me with an eye to business, and called upon the chief Daguerreans and photographers in Boston. Messrs. Southworth and Hawes possessed the largest Daguerreotype establishment, and did an excellent business. In their "Saloon" I saw the largest and finest revolving stereoscope that was ever exhibited. The pictures were all whole-plate Daguerreotypes, and set vertically on the perpendicular drum on which they revolved. The drum was turned by a handle attached to cog wheels, so that a person sitting before it could see the stereoscopic pictures with the utmost ease. It was an expensive instrument, but it was a splendid advertisement, for it drew crowds to their saloon to see it and to sit, and their enterprise met with its reward. At Mr. Whipple's gallery, in Washington Street, a dual photography was carried on, for he made both Daguerreotypes and what he called "crystallotypes," which were simply plain silver prints obtained from collodion negatives. Mr. Whipple was the first American photographer who saw the great commercial advantages of the collodion process over the Daguerreotype, and he grafted it on the elder branch of photography almost as soon as it was introduced. Indeed, Mr. Whipple's establishment may be considered the very cradle of American photography as far as collodion negatives and silver prints are concerned, for he was the very first to take hold of it with spirit, and as early as 1853 he was doing a large business in photographs, and teaching the art to others. Although I had taken collodion negatives in England with Mawson's collodion in 1852, I paid Mr. Whipple fifty dollars to be shown how he made his collodion, silver bath, developer, printing, &c., &c., for which purpose he handed me over to his active and intelligent assistant and newly-made partner, Mr. Black. This gave me the run of the establishment, and I was somewhat surprised to find how vast and varied were his mechanical appliances for reducing labour and expediting work. The successful practice of the Daguerreotype art greatly depended on the cleanness and highly polished surface of the silvered plates, and to secure these necessary conditions, Mr. Whipple had, with characteristic and Yankee-like ingenuity, obtained the assistance of a steam engine