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THE
DRY COLLODIONPROCESS.

BY

CHARLES A. LONG.

THIRD EDITION.

PUBLISHED BY BLAND & LONG, OPTICIANS,

AND

PHOTOGRAPHIC INSTRUMENT MAKERS TO HER MAJESTY,

BY APPOINTMENT.

153, FLEET STREET, LONDON.

ENTERED AT STATIONERS' HALL,

Price 1s. Per Post 1s. 1d.

1858.

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H. SILVERLOCK, PRINTER,
WARDROBE TERRACE, DOCTORS' COMMONS, LONDON, E.C.

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PREFACE TO FIRST EDITION.

The following pages shall be devoted to the descriptionof a process on Dry Collodion, which I believe to be atonce simple and effective. The experiments connectedwith the perfection of this process have occupied myleisure time for the space of two years or more, andhave been conducted with all the care of which I wasmaster. The constant repetition of them enables me tosay, that whoever will follow diligently the process stepby step, as detailed in this Pamphlet, must succeedin producing pictures in every way such as could berequired by the most exacting critic.

The process is simple, clean, and expeditious; andthe resulting Negatives possess the exquisite softnessof Albumen, the brilliancy of the wet Collodion, andthe fine artistic texture of the Paper process.

To disarm criticism, and to make peace with myfellow labourers in the art, I wish it to be understoodthat I do not claim the use of Collodion, ofGelatine, of Metagelatine, or of any of the Chemicalsused in the process—most of these have been employedby others in various ways; I merely reserveto myself the pleasure of placing in the hands ofPhotographers a definite and simple plan by whichpictures may be taken on Dry Collodion.

CHARLES A. LONG.

June 20, 1857.

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PREFACE TO SECOND EDITION.

In issuing a second edition of the Dry Collodionprocess, I would take occasion to remark, that aftersome months' practical working, it has not been foundnecessary to make any material alteration in theprocess; success has usually attended the adoption ofit, and in those cases where good pictures have notresulted, the failure has always been traced to theuse of a Collodion not suited to the process.

I cannot allow this opportunity to pass, withoutthanking those gentlemen whose opinions possessweight in matters photographic, for the very candidmanner in which they have tested the capabilities ofmy process, and for the very flattering testimonythey have borne to its efficiency, simplicity, andcertainty.

CHARLES A. LONG.

153, Fleet Street,
    September 1857.

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