The simplest is to hang a weight of 1 or 2 pounds to the hanging portion, and allow this, by its constant dragging and by its jerking effect when the cow moves, to pull the membranes from their attachments and to stimulate the womb to Expulsive contractions.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Occasionally, long passages in music demand that the Expulsive power of the breathing apparatus be used to its limit.
"Resonance in Singing and Speaking"
Thomas Fillebrown
There is such a thing as the Expulsive power of an old affection as well as the Expulsive power of a new affection.
"Mushrooms on the Moor"
Frank Boreham