See Also: marsh gas(dictionary)
marsh gas(medicine)
marsh(dictionary)
marsh(medicine)
Marsh(dictionary)
marsh(encyclopedia)
marsh mallow(encyclopedia)
marsh marigold(encyclopedia)
freshwater marsh(medicine)
Marsh Harbour(tourism)

Marsh (iou)



Marsh noun2. M19.
[James Marsh (1794-1846), Brit. chemist.]
Used in possess. and attrib. to designate a test for the presence of arsenic in which nascent hydrogen is used to reduce any arsenic present to the gas arsine, which is then converted into a dark stain of metallic arsenic by heat.