London: John Joseph Griffin & Co., 1851. [second edition, revised]. 8vo., series title, x, 2 engravings, 234 pp.,  pp. catalogue of photographic apparatus dated July, 1851. Numerous illustrations. Original decoratively blind-stamped red cloth. Newly rebacked with printed paper label on spine, tips rounded. General soiling, occasional chemical stains and general wear; occasional pencil notations. Issued as part of the series, ENCYCLOPAEDIA METROPOLITANA:. Item #31103
The author states in his preface "It is now ten years since A POPULAR TREATISE ON THE ART OF PHOTOGRAPHY was published. During the period which has elapsed the most important advances have been made in the processes by which sun-drawn pictures are obtained; and with each step of progress new lines of research have been opened, and considerably advanced our knowledge of the influences exerted by the solar radiations on the great phenomena of Nature. A reprint of the "Popular Treatise" was at first intended, with such additions as might be necessary from the improved state of our knowledge. It was, however, found impracticable to do justice to the subject in this way; therefore, an entirely new arrangement has been adopted, and only so much of the original work retained as represented the history of one of the most beautiful of the applications of Physical Science to Art. ... The present Treatise includes everything published up to the present time..." Therefore, this is considered the second edition, revised.
Roosens and Salu No.4234, also No. 7952 which site A POPULAR TREATISE ON THE ART OF PHOTOGRAPHY, 1841. See the author's preface above as to how this title relates to the earlier title. Gernsheim - INCUNABULA No. 693.