...While theairlocks were operating Mich'l stepped to a telucid and gave theagreed-on signal... 
Various 「Astounding Stories, August, 1931」
...It is remarkable to see the fear of man operating even on this huge beast...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Winston Waters performed the operation most skilfully, andcuriously enough the operating table was canopied with the skin of thelion which had been responsible for the injury...
J. H. Patterson 「The Man-eaters of Tsavo and Other East African Adventures」
...Such a result is perhaps impossible, as there areso many causes operating to check the undue increase of any onespecies: consequently the struggle, unequal as it appears, must continuefor ever...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...Before operating everything should be examined to see that it is as it shouldbe...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...I see some perforators who have finished operating in a quarter of an hour...
J. Henri Fabre Alexander Teixeira de Mattos 「The Mason-bees」
...I return to the mode of operating copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Presumably it was towarda more efficient mechanism to withstand these that selection on thecheek region was operating...
Richard C. Fox 「The Adductor Muscles of the Jaw In Some Primitive Reptiles」
... The operating animals evidently represent nomes and tribes of the Upper Egyptians...
L.W. King and H.R. Hall 「History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery」
...In your operating room, dust should be carefully excluded...
Henry H. Snelling 「The History and Practice of the Art of Photography」
...It was already in operation, and the masses of Martiansin the great cone were only waiting for the moment to sound when thereceiver on earth would be operating also...
Various 「Astounding Stories, April, 1931」
...While operating on an entirelydifferent principle, his two charts had certain very definiteadvantages: they showed the entire space around us, instead of but aportion...
Various 「Astounding Stories, April, 1931」
..."We're still operating smoothly," I commented with a sweeping glanceat the instruments over the operating table...
Various 「Astounding Stories, April, 1931」
...But why, or who mightbe operating it we could not then guess...
Various 「Astounding Stories, May, 1931」
...The navigating officer in command relays hisorders to men in the operating room, who attend to the actualexecution of those orders...
Various 「Astounding Stories, June, 1931」
...He recognized itinstantly as an operating table, and wondered afresh...
Various 「Astounding Stories, June, 1931」
...The fluid was alreadystandard beside the operating tables of the world's most modernhospitals, so valuable had its qualities proven to be...
Various 「Astounding Stories, July, 1931」
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