This section is from the book "The Home Cyclopedia Of General Information", by Charles Morris. Also available from Amazon: Home Cyclopedia of Necessary Knowledge.
A musical keyed instrument in which the tones are produced by forcing air by means of a bellows so as to cause the vibration of free metallic reeds. The first instrument of a really useful kind was the invention of Debain of Paris, in the year 1840. This instrument has now become one of the most common for use in homes, schools, and places of worship.
 
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