Bauhaus-Universität Weimar

Titel:
The Sciopticon Manual, Explaining Lantern Projections in General and the Sciopticon Apparatus in Particular Including Magic Lantern Attachments, Experiments, Novelties, Colored and Photo-Transparencies, Mechanical Movements, etc.
Person:
Marcy, L. J.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39449/61/
/ . t 
SCIOPTICON MANUAL. 69 
The preservative must be fresh. Three ounces of this 
mixture will prepare half a dozen 6$ x 8$ plates. 
If the preservative is poured over the plate, apply 
twice, working it well into the film ; throw the first dose 
away, and use the second flowing for the first applica¬ 
tion to the next plate. 
The plates must be carefully dried, either by natural 
or by artificial heat; a hot-water bottle will be found 
useful for that purpose should artificial heat be thought 
best. 
THE EXPOSURE 
Will depend upon the strength of the negative, and 
the nature of the light ; a few seconds will generally be 
enough. Close contact is absolutely required to produce 
sharp positives. An ordinary printing-frame can be 
used. 
TO DEVELOP 
In a dark-room, remove the dry plate from the frame, 
place it in a dish, and flow over it 
•Alcohol,..........-j 
Water,...........) e9ual Parts- 
Then wash in running water. 
DEVELOPING SOLUTIONS. 
Pyrogallic Acid,.........2 grains. 
Water,............1 ounce. 
Made from a stock-bottle of 
Alcohol,............1 ounce. 
Pyrogallic Acid,.........90 grains. 
Five minims of this solutions contains one grain of 
pyro.
        

Nutzerhinweis

Sehr geehrte Benutzer,

aufgrund der aktuellen Entwicklungen in der Webtechnologie, die im Goobi viewer verwendet wird, unterstützt die Software den von Ihnen verwendeten Browser nicht mehr.

Bitte benutzen Sie einen der folgenden Browser, um diese Seite korrekt darstellen zu können.

Vielen Dank für Ihr Verständnis.