NITROGEN AND ARGON IN SALMONOID SWIMBLADDERS

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Abstract
Analyses of 44 swimbladder gas samples from lake trout, lake whitefish, shallow-water cisco, deepwater cisco, and bloater caught at 60–300 ft. in Lake Huron showed no measurable quantities of combustible gas. Noncombustible gas ranged from 90 to 98%. The argon × 100/nitrogen in a gas sample from a whitefish was 1.02, virtually the same as in air. The noncombustible gas is composed apparently of the inert gases of the atmosphere.
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