Some of these inventions from 150 years ago were very successful; others were hampered by a lack of understanding of real-world conditions or basic science.
Image: Scientific American, July 26, 1862
Some of these inventions from a century and a half ago were very successful, and some were limited by a lack of understanding of real-world conditions (such as basic science, feasibility or cost) or an overestimation of their utility.
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