As I sat painting, I would see the gray eagle come down, with his long cycloidal swoop, skimming along the surface of the water, and catch, as he passed, the trout that sunned itself on the surface; or the osprey seizing it with his direct plunge into the lake, from which, after a struggle that lasted sometimes a minute, the only sign of his presence being the agitated water, he would emerge with the fish in his claws and sail aloft, hurrying to escape to the forest with his prey lest the eagle, always watching from the upper air, should rob him of his hard-earned booty.
"The Autobiography of a Journalist, Volume I"
William James Stillman
If you describe the motion of a railway train by stating that every point on the rim of each wheel describes a cycloid with reference to the earth, and a circle with reference to the train, and that the motion of the train is compounded of these cycloidal and circular motions, you will not be saying what is false, only what is cumbrous.
"Pioneers of Science"
Oliver Lodge
On the wheel we roll a straight line, which gives a cycloidal curve suitable to work with the square thread.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose