13. How may valvular heart trouble be remedied?
"A Handbook of Health"
Woods Hutchinson
When this has happened, the heart is in the condition of a pump which will not hold water, because the leather valve in its bucket is broken or warped; and we say that the patient has valvular or organic heart disease.
"A Handbook of Health"
Woods Hutchinson
Thus, the bellows of the blacksmith, which is nothing more than a hollow cylinder of wood, with a valvular piston, beside blowing the fire, serves for his seat when set on end, and as a box to contain the rest of his tools.
"Travels in China, Containing Descriptions, Observations, and Comparisons, Made and Collected in the Course of a Short Residence at the Imperial Palace of Yuen-Min-Yuen, and on a Subsequent Journey through the Country from Pekin to Canton"
John Barrow