Let us turn the page—literally.

A detailed black-and-white diagram of a "Cross-section of a Warm Front Cyclone." The illustration, typical of mid-century scientific engraving, shows cold air masses (depicted with scalloped lines) undercutting warm air (smooth lines). There is a small table labeled "Beaufort Wind Scale" and a sidebar titled "Cloud Classifications After Bergeron."

Alternatively, page 849 might be a statistical table within the entry The 1959 Britannica was famously proud of its industrial data.