...It is veryactive, moving by powerful jerks, each one of which throws it far on itsway... 
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...If the rod at a, is pushed ineither direction, it jerks up the nose in amanner that cures him of his inclination...
Richard L. Allen 「Domestic Animals」
...And what a series of jerks it is composed of, and howabruptly he finishes his song, as if suddenly alarmed; but this is hispeculiar habit and common to him alone...
Various 「Birds Illustrated by Color Photograph [April, 1897]」
...One involuntarily closeshis eyes and jerks back his head...
John Burroughs 「Bird Stories from Burroughs」
...She dives head first into the cell; and for a few moments you see some spasmodic jerks which show that she is disgorging the honey-syrup...
J. Henri Fabre Alexander Teixeira de Mattos 「The Mason-bees」
...They areso formed that they cannot go forward, but movealways backward by a series of jerks...
Elizabeth Brightwen 「Wild Nature Won By Kindness」
...Thus you pass, notwith a flow of persisting existence, but by a series of little jerks...
Various 「Astounding Stories, May, 1931」
... thisBeryl were forced to revolve in sharp jerks at an increasing rate ofspeed! With all connections in place...
Various 「Astounding Stories of Super-Science July 1930」
...Every time the sea struck the Cato, it twisted her about upon the rock with such violent jerks, that they expected the stern, which was down in the water, would part every moment...
Matthew Flinders 「A Voyage to Terra Australis Volume 2」
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