Wrote Letter L-496 of 1713-06-28 to the members of the Royal Society about little animals on duckweed, muscle fiber membranes, and a list of unanswered letters; little animals in his mouth come from rinsing glasses with pond water

Date: 
June 28, 1713
Standard reference information
L-number: 
L-496
Leeuwenhoek's number: 
VII
Collected Letters number: 
302
Collected Letters volume: 
17