People of an artistic turn of mind had been in the habit of making what were called "silhouettes." The sitter was so posed that the light from a lamp threw the profile of his face in sharp shadow against a white screen. It was then easy enough to obtain a fairly accurate silhouette, by either outlining the profile or cutting it out from the screen.

It occurred to a man by the name of Wedgwood that this profile might be printed on the screen by using paper treated with silver nitrate, and he not only succeeded in accomplishing this, but also in perfecting what was then called the "camera obscura," the forerunner of the kodak of today. The camera obscura consisted of a box with a lens at one end and a ground glass at the other, just like a modern camera. It was used by artists who found that by observing the picture on the ground glass they could draw it more easily. Wedgwood tried to make pictures by substituting his prepared paper for the ground glass, but the paper was too insensitive to obtain any result. Sir Humphrey Davy, continuing Wedgwood's experiments, and using chloride of silver instead of nitrate, succeeded in making powdered, to facilitate the exposure. An exposure today with a modern camera, under similar conditions, could be made in 1/1000 of a second.

Artotype Copy of the Earliest Sunlight Picture of a Human Face.

Miss Dorothy Catherine Draper, taken by her brother, Prof. John W. Draper, M.D., LL.D., in 1840.

It was impossible, of course, to find many sitters as patient as Miss Draper - try keeping perfectly quiet for even a minute if you would know why Miss Draper should be ranked as a phoco-graphic martyr - and many experiments were made in an attempt to materially shorten the time of exposure. The only real solution, of course, was to find some method where the light had to do only a little of the work, leaving the production of the image itself to chemical action.

The first great step in this direction was taken by Fox Talbot in 1841. He found, that if he prepared a sheet of paper with silver iodide and exposed it in the camera, he got only a very faint image, but if, after exposure, he washed over the paper with a solution of silver nitrate and gallic acid, the faint image was built up into a strong picture. And not only was Fox Talbot the first to photographs through a microscope, by using sunlight. These were the first pictures made by means of a lens on a photographic material. But none of these pictures were permanent, and it was not until 1839 that Sir John Herschel found that "hypo," which he had himself discovered in 1819, would enable him to "fix" the picture and make it permanent. At about this time, Daguerre announced discoveries that gave photography at least a momentary impetus, but the Daguerre process did not long survive, as it was slow, costly and troublesome. The daguerreotype was made on a thin sheet of copper, silver plated on one side, polished to a high degree of brilliancy, and made sensitive by exposing it to the fumes of iodine. The first daguerreotype made in America, that of Miss Catherine Draper, was exposed for six minutes in strong sunlight, and the face of the sitter thickly develop a faint or invisible image; he was also the first to make a negative and use it for printing.

Old-Fashioned Photographic Equipment.

In spite of all these advances, photography was almost exclusively a studio

The First Kodak (1888), Showing Roll Holder and Roll Film for 100 Exposures.

The First Daylight Loading Method.

The First "Folding Kodak" Fitted for Plates or Roll Film.

"Dope" Barrel proposition, when, in 1880, experiments were begun which were to result in photography that could be universally enjoyed - photography as we know it today. Of course there were amateurs even in those early photographic days, but they were few and far between. There was something about the bulk and weight of the old-time photographic outfit that failed to beget general enthusiasm.

Raw Stock Rolls, Kodak Park.

Assembling Room, Camera Works.

To lighten the camera burden, and to simplify the various photographic processes, were the problems that confronted the American inventor. The first step toward film photography - and it was film photography that relegated camera bulk to the scrap heap - was a roll film made of coated paper to which a sensitive emulsion was applied, but the real goal was reached when cellulose was substituted as a film base. This made practicable the present flexible, transparent film with its attendant convenience and dependability.

The kodak was the natural outcome of the roll film system. The first one appeared in 1888, and its development, which proceeded simultaneously with the film discoveries, soon reached the point where the loading and unloading could be done in daylight. Daylight developing soon followed, and the dark room, as far as the kodaker was concerned, took its proper place as a relic of the dark ages.

With 1914 came autographic photography, so that now with a kodak in one pocket and a handful of film in the other, the amateur is equipped for a picture-making tour of the world - not simply a pictorial record, but a written record as well, for autographic photography permits the dating and titling of each negative directly after exposure.

Photography, not so many years ago an exclusive pleasure for the few, is now easy fun for millions.

Filter Room, Kodak Park Cellulose Acetate Manufacturing.