Scientific American - USA (2022-04)

(Maropa) #1
April 2022, ScientificAmerican.com 83

50, 100 & 150 YEARS AGO
INNOVATION AND DISCOVERY AS CHRONICLED IN Scientific AmericAn
Compiled by Mark Fischetti

SCIENTIfIC AmERICAN ONLINE
FIND ORIGINAL ARTICLES AND IMAGES
IN THE Scientific AmericAn ARCHIVE S AT
scientificamerican.com/magazine/sa

ApRil

Scientific American,


Vol. XXVI, No. 16; April 13, 1872 (


lard oil


);^ Scientific American,


Vol. 126, No. 4; April 1922 (


loudspeaker, asbestos, tires


);^ Scientific American,


Vol. 226, No. 4; April 1972 (


car, slide rule


)


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In 1872 lard oil was in demand for various uses. In 1922 consumers
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