Gas Retort Small 270×320 Medium 540×640 Large 864×1024 Download Tiff Original 2024×2400 | (1.7 MB) Description "Elevation of Hislop's Gas Retort Furnace." — Encyclopedia Britannica, 1893 Keywords elevation, furnace, gas, Hislop, retort Galleries Miscellaneous Industrial Machinery Source: The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)
