Cross-section of the steam portable engine developed by French engineer Christophe-François Calla in 1852. Illustration from "Les Merveilles de la science ou description populaire des inventions modernes" written by Louis Figuier and published in 1867 by Furne, Jouvet et Cie.

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Keywords: 1850s, 19th, agricultural, agriculture, boiler, century, cylinder, development, diagram, drawing, engine, engraving, france, french, illustration, industry, invention, locomobile, machinery, progress, steam, technical, technology, wheels