Rub a clean dry glass flask vigorously all over with a piece of silk, and roll it about in a pile of very course cork dust or a quantity of crumbled bits of dry corn stalk pith. When the flask is lifted it will be covered with dust or pith, the particles of which it will proceed to fire off in different directions, some to considerable distance.
©1930 by Iowa State Teachers College
"Experiments in Static Electricity,"
Science Bulletin: Vol. 3:
4, Article 11.
Available at: https://scholarworks.uni.edu/science_bulletin/vol3/iss4/11