...A “dog-in-the-manger”man, who can improve his town, his church, hisneighborhood, and does not, is a drone in life’shive and deserves no success... 
James W. Donovan 「Don't Marry」
...switch was pulled over, and the dynamo's drone pulsed through theroom...
Various 「Astounding Stories, August, 1931」
...Aroused by the drone of the generator andwhat it signified, the giant had floundered up from the floor and nowcame clutching blindly for him...
Various 「Astounding Stories, August, 1931」
...Then to his awakening senses came a drone of voices close at hand, to which at first he paid little heed...
Rafael Sabatini 「Scaramouche」
...The drone grew louder, and, looking up, I could see the enemy planes flying ina beautiful formation, very leisurely as it seemed, with all London at theirmercy...
John Buchan 「Mr. Standfast」
...Then came the long drone and sing-song of the preacher with its sharp wilder climaxes and the answering "amens" and screams of the worshippers...
W. E. B. Du Bois 「The Quest of the Silver Fleece」
...The new-born queen takesher marriage flight high in the air with a drone, and on her returnundertakes the management of the hive, and the duty of laying eggs...
Alpheus Spring Packard 「Our Common Insects」
...'Opening a drone there appears a portion formed by the assemblage ofseveral parts, often whiter than milk...
Francis Huber Anonymous 「New observations on the natural history of bees」
...We found this new part in the first drone we dissected...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Eventhe drone of the drowsy beetle, swingingover the ripples of the shadowed stream orfrom tuft to tuft of grass beside the woodlandpath, had ceased...
Alfred W. Rees 「Creatures of the Night」
...The drone of the disintegrators, hitherto muffled by the earththey bit into, rose to a hollow scream...
Various 「Astounding Stories, April, 1931」
...Faintly, above the purring drone of the motor, I heard Ray Summers'shout...
Various 「Astounding Stories, April, 1931」
...None saw the three in the doorwayuntil a roar split the drone of worship...
Various 「Astounding Stories, July, 1931」
...At the slow speed we were traveling the drone of our motors was hardlyaudible to us, and I felt sure that it could not be heard on the ground...
Various 「Astounding Stories of Super-Science September 1930」
...There was no sensation of movement in that hermeticallysealed flyer, and, after the first few moments, the steady drone of therocket motor failed to register on my senses...
Various 「Astounding Stories of Super-Science July 1930」
...That diabolical machine of Tom's wasstill operating, the drone of its motors being the only sound in thelaboratory as the inventor closed his mouth grimly and made adesperate effort to raise his head...
Harl Vincent 「Wanderer of Infinity」
...His nerves seemed to curl up, and for a second his mind was thoroughly disorganized before it again took up the drone about Iapetus...
Anthony Gilmore 「The Affair of the Brains」
...From the distance came a dull drone of soundwhich brought him to his feet with a start...
Sterner St. Paul Meek 「The Solar Magnet」
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