...This thought kept drumming in hisears... 
Various 「Astounding Stories, August, 1931」
... 'Youmay hear drums any night, but a drumming like that I only once heardbefore...
John Buchan 「Prester John」
...The chief then gives them a ceremonious reception, with abundance of speech-making and drumming...
David Livingstone 「Missionary Travels and Researches in South Africa」
...This drumming is hislove song...
Neltje Blanchan 「Birds Every Child Should Know」
...
The drummer drumming...
Neltje Blanchan 「Birds Every Child Should Know」
...These antics,comparable to the drumming of snipe androding of woodcock, are probably to be explainedon the same basis of sexual emotion...
Frederick G. Aflalo 「Birds in the Calendar」
... Wilson was evidently familiar with this vernal drumming of the woodpeckers, but quite misinterprets it...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...I heard the first sparrow sing that morning and the first screaming of the circling hawks, and about seven o'clock the first drumming of my little friend...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...Still the drumming did not cease,but was quite as fervent as before...
John Burroughs 「Bird Stories from Burroughs」
...The kangaroo rat was just outsidethe entrance of one of its burrows, and though moving about more orless restlessly at first showed little fear, and kept up the thumpingor drumming at intervals...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...Darwinquotes an authority for the statement that ourruffed grouse makes its drumming sound by strikingits wings together over its back...
John Burroughs 「Ways of Nature」
...Both the laughter and the drumming ceased as suddenly as they hadsounded...
Various 「Astounding Stories, June, 1931」
...Bentley felt it was near midnightwhen Barter returned, his return heralded by a strange commotion inthe clearing, and the frightful drumming of the great apes—or atleast one great ape...
Various 「Astounding Stories, June, 1931」
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