Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 613
s condition of the mines atmo-sphere except of the presence of this gas. Carbonmonoxid may exist in deadly quantities and thesafety-lamp show no evidence of it, because aquantity too small to affect the lamp may be ex-tremely poisonous to a living creature. After anexplosion, many volunteers wish… … VOLUNTEER RESCUERS WITH CANARY-BIRD IN CAGE IN A COAL-MINE WHERE DISASTER HAS JAKKN PLACE. 193-] NATURE AND SCIENCE FOR YOUNG FOLKS 1039 and mice can do what the miners lamp cannot —that is, they can show how far these volunteersmay go with safety.
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