or, some Physiological Descriptions of MINUTE BODIES made by Magnifying Glasses with Observations and Inquiries thereupon by R. Hooke, Fellow of the Royal Society

“They were incredibly small, nay so small, in my sight,
that I judged that even if 100 of these very wee animals
lay stretched out one against another, they could
not reach to the length of a grain of coarse Sand.”

Antonie van Leeuwenhoek describes his discovery of bacteria