Joseph C. Martindale, First Lessons in Natural Philosophy for Beginners
“ As the fruit cools, the steam is condensed to water, and a vacuum is produced, so that the fruit is kept from the air.What is the plaything which boys call a sucker?A sucker is a round piece of leather, with a string fastened to its centre.How is the sucker used?The leather is made very soft and wet, so that when pressed against a stone or brick, all the air under the leather is forced out; and when the leather is lifted up, the stone or brick is lifted with it, as is represented by Fig. ”
