Dalton biographer Elizabeth Patterson notes that the first entry about atoms in Dalton's notebooks is dated Sept. 6, 1803 . Dalton was investigating the physics of gases rather than chemical reactions and compound stoichiometries at that time . His explanations employ a definite atomic model by late 1803, and Dalton himself reminisced in 1835:
Dalton's atomic hypothesis was published in complete form in his 1808 book A New System of Chemical Philosophy, which also included hypotheses about heat as a fluid and about simple compound stoichiometries that were shown to be incorrect a few years later.
| A brief summary of Dalton's atomic theory.
|What year should I cite for the origin of Dalton's atomic theory?|
|Excerpts from Dalton's A New System of Chemical Philosophy published in 1808. Includes Dalton's table of atomic weights and and scanned atomic symbols.|
|This narrative biography of John Dalton is told from his brother's point of view. Contributed to the 1992 Woodrow Wilson Summer Institute on the history of chemistry. Includes a bibliography and a Dalton charicature.|
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