Portion of "Mallinckrodt Outline of the History of Chemistry" poster showing development of the Radical Theory and the Type Theories.
(Use downward/upward and right/left keyboard arrows to traverse this portion of the poster.

Connections to Radical Theory











"The Speculative Side of Ancient Chemistry" portion of the 1961 Mallinckrodt Poster. Speculative Side of Ancient Chemistry







(1850-1930) Periodic Law to Bohr Atom (1850 - 1930)













"Mallinckrodt Outline of the History of Chemistry" (1961) 1961 Mallinckrodt Poster







Magnified 1961 Mallinckrodt Poster



Bohr Atom Bohr Atom (at top, middle)






Theory of Electrolytic Dissociation (Arrhenius, 1880's) through 1910 Bohr atom Theory of Electrolytic Dissociation (at top, left)