Sentence Examples with the word SEALING UP

This may be done by the method suggested by Arago in 1828, introduced by Aime in 1841 and again suggested by Glaisher in 1858, of sealing up the whole instrument in a glass tube exhausted of air; or, less effectively, by surrounding the bulb alone with a strong outer sheath of glass.

Instead of serried rows of bees sealing up every gap in the combs and keeping the brood warm, he sees the skillful complex structures of the combs, but no longer in their former state of purity.