Science, Vol 192, Issue 4246, 1348-1349
Copyright © 1976 by American Association for the Advancement of Science
Leeuwenkoek's observation of bacteria
LE Casida Jr
A form of dark-field illumination was produced that allows bacteria in aqueous suspension to be observed with both a Leeuwenhoek microsocope and a compound microscope without a condenser. Possibly, this illumination was Leeuwenhoek's "particular method of observing" bacteria.