Elementary Science by Grades Book Four: A Nature Study and Science Reader (1929)
Persing, Ellis C., Wildman, Edward E. · D. Appleton and Company · leaf 199
WINDMILLS 181 … NEW STEEL WINDMILLS HAVE MANY USES, BUT THE MOST IMPORTANT IS TO PUMP WATER. windmills.” The old-fashioned kind with the great canvas sails is still in use there. They dot the country, and day after day, they pump the water from the low, wet land into the canals. If it were not for the pumps and…
Science · Ants · Wasps · Turtles · Crayfish · Trees · Mushrooms · Birds · Beavers · Muskrat · Bears · Milky Way · Balloons · Water · Windmills · Kites
Internet Archive · National Library of Education · Public domain (published before 1931). Free to use for anything.
