Fletcher Pratt,
The Onslaught from Rigel — Chapter XVI: A Dash for Freedom
(1932)
“ Along and slightly below this walk was a row of instrument boards not unlike those of the mining machine, and at each of these one of the ape-men lay, helmet on head, apparently asleep. “No, not asleep,” the Lassan told him, “they do not require it, like all our mechanical servants. They have merely been thrown into a state of nothingness till we need them.” ”
