Guns that shoot colored fire

Title (Dublin Core): Guns that shoot colored fire
Subject (Dublin Core): en Technology; en Communication; en Rifles and firearms
Article Title and/or Image Caption (Dublin Core): Guns that Shoot Colored Fire; Caption: When one of these pistols is discharged, a stream of colored fire shoots out of the barrel for a distance of about fifty feet. Some pistols are loaded with Roman-candle fire-balls, and shoot a stream from one hundred and fifty to two hundred feet. Obviously there is a long range of visibility, to these shots of colored fire, and almost no limit to the code of signals that may be employed. They are used for signaling between airplanes in midair and the earth
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): Interwar period
Date Issued (Dublin Core): 1920-09
Is Part Of (Dublin Core): Popular Science Monthly, v. 97, n. 3, 1920
pages (Bibliographic Ontology): 74
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
Archived by (Dublin Core): Filippo Valle; Alberto Bordignon (Supervisor)