The Canary Birds of War

Title (Dublin Core): The Canary Birds of War
Subject (Dublin Core): en Technology; en Animals
Article Title and/or Image Caption (Dublin Core): The Canary Birds of War; Caption 1: Some battle gasses, deadly as they are, cannot be even smelled. But the canary drops over just the same; Caption 2: Long before a miner feels the effect of gas in a mine a canary bird suffocates. That's why canaries are used as gas-alarm; Caption 3: Canaries were drafted for service in the British army soon after the first gas cloud was launched
Contributor (Dublin Core): John Walker Harrington (writer); British War Mission (photo)
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War I
Date Issued (Dublin Core): 1918-08
Is Part Of (Dublin Core): Popular Science Monthly, v. 93, n. 2, 1918
pages (Bibliographic Ontology): 258-260
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): Hartz Mountains; Madeira Island; Norwich; England; Mary Garden; United States Bureau of Mines
Archived by (Dublin Core): Filippo Valle; Alberto Bordignon (Supervisor)