In 1564 he again visited the continent, in order to present his Monas hieroglyphica to the emperor Maximilian, to whom he had dedicated it.
The universe, then, is a living cosmos, an infinitely animated system, whose end is the perfect realization of the variously graduated forms. The unity which sunders itself into the multiplicity of things may be called the monas monadum, each thing being a monas or self-existent, living being, a universe in itself.
Cocci: spherical or spheroidal cells, which, according to their relative (not very well defined) sizes are spoken of as Micrococci, Macrococci, and perhaps Monas forms.
His principal works are - Propaedeumata aphoristica (London, 1 55 8); Monas hieroglyphica (Antwerp, 1564); Epistola ad Fredericum Commandinum (Pesaro, 1570); Preface Mathematical to the English Euclid (1570); Divers Annotations and Inventions added after the tenth book of English Euclid (1570); Epistola praefixa Ephemeridibus Joannis Feldi, a.