The Child's Book of Nature for the Use of Families and Schools Intended to Aid Mothers and Teachers in Training Children in the Observation of Nature. Revised Edition. Part 3: Air, Water, Heat, Light, etc. (1886)
Hooker, Worthington · Harper & Brothers · leaf 42
3G PUMPS. How pumping is like sucking. … in the tube when you suck. There is a tube that goes down into the water in the cistern. When you work the handle, you do the same thing for the pump that your mouth does for the tube in sucking any liquid ; and when the pump has not been worked for some time, you have to move the handle up and…
