Supposing that we add a weight to one end of the spring by attaching to it a metal ball, and then move the other end to and fro with certain periodic motion, it will be found quite easy to set up in the spring a Pulsatory motion resembling the movement of the air in an open organ-pipe.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
The exponents of the so-called "Pulsatory hypothesis" can hardly claim that a change in the climate will explain the fact seeing that the neighbouring people were able to accomplish this great feat under very similar climatic conditions.
"The Black Man's Place in South Africa"
Peter Nielsen
And now before closing this psychical investigation, and picking up the thread of the story, which will of course be no more than an experimental demonstration of the working of the brain into which we are looking, we must take note of two curious mental traits both living side by side, and both apparently negative of the other's existence: an intense and ever Pulsatory horror of death, a sullen contempt and often a ferocious hatred of life.
"A Mere Accident"
George Moore