The versatile tool of improvement
Encountering optical deceptions
Tools of accuracy
Microscopic fallacies, peculiar optical deceptions, and the eye's defects
Test objects and the pretensions, defects, and excellencies of individual microscopes
Johannes Müller and the problem of 'subject-object'
Bringing physics to anatomy
Handling nervous tissue and the problem of visual acuity
The microscope's retina
Writing on microscopy.