.MTMxMQ.MTA2NTEz

On the first of January 1851 I commenced the publication of the "Photographic Art Journal," and the following year also published a "Dictionary of Photography," while I continued to devote from fourteen to sixteen hours a day to the regular business of Mr. A-. This arduous labor unclear on until the fall of 1858, and some conception of its exhausting effort may be formed by examining the volumes of the Photographic Art Journal and remembering that at least thirteen hours of each day was occupied in my regular business; in fact after the year 1855 I repeatedly fainted from exhaustion on arriving at home. In the year 1852 I invented the Photograph; an instrument for making life-size photographs, but it was not until Mr. Fredericks arrived from Paris that it was introduced into practical operation. This was eighteen months after its invention. He was the first photographer who could understand and appreciate it. Two years before this I invented a mercury bath; its design being to prevent the unclear effects, of the fumes of mercury, when the system Daguerreotypish?, however, unclear to run the sink of disease to paying the additional expense of the new over the old machine. IN 1858 I invented a new method of preparing paper for photographic use, and also the chromo-photographic process, consisting of a mer