especial-study

Updated: April 25, 2026

It appears that the radiolarians were discovered about a half-century ago by Johannes Müller, who made an especial-study of them, which was uncompleted at the time of his death in 1858. His monograph, describing the fifty species then known, was published posthumously.

Edward Huntington Williams - A History of Science, Volume 5 : Aspects Of Recent Science