Born in Cambridge, MA, to Benjamin and Sarah Hunt (Mills) Peirce, 10 Sept.


Enters Harvard College

1858 First publication: "Think Again!" Harvard Magazine, April


Graduates (A.B.) from Harvard; continues as a "resident graduate" for one year.


Temporary aide in U.S. Coast Survey, fall to spring '60


Studies classification with Agassiz at Harvard, summer-fall


Enters Lawrence Scientific School at Harvard

  Appointed regular aide in Coast Survey, 1 July


Receives graduate degree (A.M.) from Harvard

  Marries Harriet Melusina Fay, 16 Oct.


Graduates summa cum laude (Sc.B.) in Chemistry from Lawrence Scientific School


Harvard lectures on "The Logic of Science," spring


Begins Logic Notebook, 12 Nov.; last entry in Nov. '09


Lowell Institute lectures on "The Logic of Science; or Induction and Hypothesis," 24 Oct.-1 Dec.


Elected to American Academy of Arts and Sciences, 30 Jan.


Writes first of about 300 Nation reviews, in Mar.; last in Dec. '08


Assistant at Harvard Observatory, Oct.'69 - Dec. '72


Harvard lectures on "British Logicians," Dec.-Jan.


First Coast Survey assignment in Europe: 18 June '70 - 7 Mar. '71


Founding member of Cambridge Metaphysical Club in spring, or in Jan. '72


In charge of Survey office, spring-summer


In charge of pendulum experiments, beginning in Nov.


Promoted to rank of Assistant in the Survey, 1 Dec.


Second Coast Survey assignment in Europe, Apr. '75 - Aug. '76


Serves as first official American delegate to International Geodetic Association in Paris, 20-29 Sept.


Separates from Melusina in Oct.


Elected to National Academy of Sciences, 20 Apr.


Third Coast Survey assignment in Europe, 13 Sept.-18 Nov.


Represents U.S. at International Geodetic Association conference in Stuttgart, 27 Sept. - 2 Oct.


Photometric Researches published in Aug.


Lecturer in logic at Johns Hopkins University


First meeting of Johns Hopkins Metaphysical Club, 28 Oct.


Elected to London Mathematical Society, 11 Mar.


Fourth Coast Survey assignment in Europe, Apr.-Aug.

  Addresses French Academy on value of gravity, 14 June

Designs and supervises the construction of the first of four gravity pendulums bearing his name.

  Death of Peirce's father, Benjamin, 6 Oct.

Trains members of the Lady Franklin Bay Expedition on the use of Peirce Pendulum No. 1 prior to their June departure for the Arctic.


Elected to American Association for the Advancement of Science in Aug.


Studies in Logic published in spring


Divorces Melusina, 24 Apr.


Marries Juliette Froissy (Pourtalais), 26 Apr.


Fifth and final Coast Survey assignment in Europe, May-Sept.

Prepares about 15,000 definitions for Century Dictionary (published 1889-91)
1884 Lt Greely and survivors of the Lady Franklin Bay Expedition bring out the raw data for Peirce's report on Arctic gravity measurements in June
  Forced to resign from Johns Hopkins; moves to Washington, D.C. in Sept.
  In charge of U.S. Office of Weights and Measures, Oct. '84 - 22 Feb. '85


Directs pendulum operations to determine relative gravity at Washington, D.C. and various field sites, Jul. '84 - Feb. '86


Moves from Washington, D.C. to New York City, Mar.

  Operations at Stevens Institute, Hoboken, summer
  Relieved of field operations for the Coast Survey, 15 Aug.


Receives first inquiries about his correspondence course in logic, Jan.


Submits, under pressure, his report on General Greely's pendulum work at Fort Conger, 11 Apr.


Moves with Juliette to Milford, Penn. 28 Apr.; by May 11 rents a house (in town) for the summer


Finishes first paper after moving to Milford, "Criticism on Phantasms of the Living," 14 May. Published in Dec.


Death of Peirce's mother, Sarah Mills, 10 Oct.


Turns "One, Two, Three" (1885-86) into "A Guess at the Riddle"


Appointed by President Cleveland to U.S. Assay Commission, 1 Jan.


Death of Charlotte Elizabeth Peirce, his aunt, 4 Feb.


Rents Scheinmee Homestead on Broad Street, Milford, 28 Apr.


Assigns a clerk, Allan Risteen, for Coast Survey work


Risteen and wife stay with Peirces in Milford, Apr. - Jul.


Purchases with Juliette the Quick farm about two miles northeast of Milford, 10 May; renamed Arisbe in 1891


First edition of Century Dictionary published; continues till 1891


Starts renovations on Quick farmhouse, Jan.


O. H. Mitchell, 37, died of pneumonia at Marietta, 29 Mar.


Juliette diagnosed with tuberculosis in May

  Thomas Corwin Mendenhall succeeds Thorn as superintendent of the Coast Survey, 9 Jul.
  Submits report on gravity at Smithsonian, Ann Arbor, Madison, and Cornell, 20 Nov. Never published
  Juliette travels to Mediterranean for her health, Nov. 27 - spring '90


Ernst Schröder resumes correspondence with Peirce, 1 Feb.

  Completes major addition to Arisbe, Apr.

Helps organize the New York Times debate on Spencer; contributes under the name "Outsider," 23 Mar. - 27 Apr.


Invited by Paul Carus to write article for inaugural issue of the Monist, 2 Jul.; submits "The Architecture of Theories," 3 Aug. (too late for the first issue), launching one of his most important publishing relationships


Juliette undergoes surgery for gynecological problems in Jan.


In Sep., after receiving no further work from Peirce on gravity determinations, Superintendent Mendenhall asks for Peirce's resignation from Coast and Geodetic Survey, effective 31 Dec.


Delivers Lowell lectures on "The History of Science," 28 Nov. '92 - 5 Jan. '93


Petrus Peregrinus announced; prospectus published, Oct. "Search for a Method" announced by Open Court (not completed)

"The Principles of Philosophy" (in 12 vols.) announced by Henry Holt Co., Dec. (not completed)


"How to Reason" rejected by both Macmillan and Ginn & Co.


"New Elements of Mathematics" rejected by Ginn & Co.


Consulting chemical engineer (till '02), St. Lawrence Power Co.

Reviewed Ernst Schröder's works on logic of relatives


Delivers Cambridge lectures on "Reasoning and the Logic of Things," 10 Feb. - 7 Mar.


"The History of Science" announced by Putnam's (not completed)

  William James introduces "Pragmatism" to Berkeley Philosophical Union, naming Peirce its father, 26 Aug.


Contributed to Baldwin's Dictionary of Philosophy and Psychology

  Presents "On the Logic of Research into Ancient History" to National Academy of Sciences, 12-14 Nov.
Completes the first four chapters of "Minute Logic"


Applies to Carnegie Institution for grant to fund "Proposed Memoirs on Minute Logic" (rejected)


Delivers Harvard lectures on "Pragmatism," 26 Mar. - 17 May


Delivers Lowell lectures on "Some Topics of Logic," 23 Nov. - 17 Dec.

  Begins correspondence with Victoria Lady Welby
Publishes three Monist papers on pragmatism (series incomplete)
  1906 Presents paper on existential graphs to National Academy of Sciences, Apr.
  Presents paper on phaneroscopy to National Academy of Sciences, Nov.


Delivers three Harvard Philosophy Club lectures on "Logical Methodeutic," 8-13 Apr.

  Writes lengthy letter to the Nation and Atlantic Monthly on pragmatism (especially R 318)
1908 Publishes "A Neglected Argument for the Reality of God," Hibbert Journal, Oct.
Publishes Monist series on "Amazing Mazes"


Originates a matrix method for three-valued logic; recorded in his Logic Notebook (R 339), 23 Feb.

1911 Writes "A Sketch of Logical Critics" for volume to honor Lady Welby (not completed)
  Last public presentation: "The Reasons of Reasoning, or Grounds of Inferring" at meeting of National Academy of Sciences, 21-22 Nov.


Dies of cancer at Arisbe, 19 April