These Leibniz called monads, the atoms of reality, ideal but somehow attached to organic machines that could be immeasurably small. Any complex body was a composite of smaller monads, each ...

AN illustrated article dealing with this question of the heterogenetic origin from small Zooglœa masses of Fungus-germs, Monads, or Amœbæ, written by me, appeared in NATURE of November 24 ...