This section is from the book "A Library Of Wonders And Curiosities Found In Nature And Art, Science And Literature", by I. Platt. Also available from Amazon: A library of wonders and curiosities.
Extraordinary Echoes, and Whispering Places - Natural Productions resembling Artificial Compositions - Remarkable Lamps. - Perpetual Fire - Magical Drum - An Extraordinary Cannon.- Curious Account of Old Bread - Substitute for Spectacles-Winter Sleep of Animals and Plants.
 
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