Inside Out Library · Explore

Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .. (1899)

Boyd, James Penny, 1836-1910 · Philadelphia, Pa., A. J. Holman & Co · leaf 41

An illustration from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .., 1899, leaf 41
hands of Wheatstone, showed, as early as 1819, thatthe vibrations of the air produced by a musical instrument were very minute,and could be transmitted hundreds of yards by means of a string armed withdelicate diaphragms. But while the string telephone served to confirm thefact that sounds are…

Progress · Inventions

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

More pictures from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress ..

More like this