Springtime for chemistry?
The education of Alexander Williamson
Interpreting chemical atoms
The experimental dissection of organic molecules
Excursus: isolated radicals?
The spread of Williamsonian theory
The architect of molecules
The education of August Kekulé
Excursus: the road to Valence
Building an unseen structure
The start of a teaching career
The theory of polyatomic radicals
The theory of atomicity of the elements
A barometer of the science
Formulas, models, reality
Excursus: a case in point
Constant or variable atomicity?
The heuristics of molecular representation
Excursus: heurism in action
The fate of the new graphic formulas
Excursus: looking through the stereoscope
Molecular democracy or autocracy?
The revenge of Jupiter's children
First approaches to the problem
Benzene through the phenakistoscope
Excursus: ring around the rosie
Early stereospatial speculations
Imagination in science: point/counterpoint
Chemists, physicists, and the microworld
The making of a chemist-historian
The festivities in Berlin
The eureka experience and the unconscious mind
The scientific image-ination
Mental images and science
Mental images and history
Transdictive images in physics and in chemistry.
