Includes bibliographical references and index Pt. I. History of discoveries in photography. Ch. 1. Early researches on the chemical action of the solar rays -- CH. II. Heliography - the process of M. Niepce -- Ch. III. Mr. H. Fox Talbot's photogenic drawings, calotype & c -- CH. IV. Daguerreotype : the discovery of M. Daguerre -- Ch. V. The photographic processes on paper of Sir John Herschel -- Ch. VI. Miscellaneous process -- Ch. VII. Photographs on glass plates and recent improvements -- Ch. VIII. Portraiture by the daguerreotype -- Ch. IX. General summary of the history of photography -- Part II. Scientific investigations on photography. Ch. I. General remarks on the solar agency producing chemical change -- Ch. II. Chemical changes on sensitive preparations -- Ch. III. The theory of the daguerreotype -- Ch. IV. On the photographic registration of philosophical instruments and the means of determining the variations of actinic power and for experiments on the chemical focus -- Ch. V. Thermography -- Ch. VI. On the possibility of producing photographs in ther natural colours -- Ch. VII. On lenses for the photographic camera -- Part III. Practice of photography. Ch. I. Selections of paper for photographic purposes -- Ch. II. On the apparatus necessary for the first practice of photography on paper -- Ch. III. On the modes of manipulation adopted in the preparation of sensitive papers -- Ch. IV. On fixing the photographic pictures -- Ch. V. The calotype as now practised, and its modifications -- Ch. VI. The daguerreotype -- Ch. VII. The collodion process -- Ch. VIII. The use of albumen on glass plates -- Ch. IX. On the production of positive photographs by the use of the salts of iodine -- Ch. X. General remarks on the use of the camera obscura : the photographic pentagraph -- Ch. XL. The stereoscope -- CH. XII. Photographic engraving From the collection of Nicholas M. & Marilyn A. Graver