...eneath them the red cauldron seethed and tossed as they spednorthward; the crimson blanket of death that was steadily covering thecountry... 
Various 「Astounding Stories, August, 1931」
...The vapour which rushes up from this cauldron to the height of two or three hundred feet, being condensed, changes its hue to that of dark smoke, and then comes down in a constant shower...
W.H.G. Kingston 「Great African Travellers」
...The smelter was in a stone building—one of a small group of mine houseswhich stood in a cauldron depression above excavations...
Various 「Astounding Stories of Super-Science September 1930」
...The cauldron was about two hundredfeet broad and fifty feet deep; an irregular circular bowl...
Raymond King Cummings 「Wandl the Invader」
...And from the cauldron, the hum andthe hiss of the current, the snapping of sparks, were all lost in awild electrical screaming turmoil...
Raymond King Cummings 「Wandl the Invader」
...Snap and I, onthe cauldron rim, were engulfed in the blaze of reflected light andthe wild scream of sound...
Raymond King Cummings 「Wandl the Invader」
...The upper plateau lay silent in the starlight, but the cauldron behindus was ringing with alarm, and again the danger siren was blaring...
Raymond King Cummings 「Wandl the Invader」
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