v. 1. The Universalist years, 1826-29 -- v. 2. The free thought and Unitarian years, 1830-35 -- v. 3. The Transcendentalist years, 1836-38 -- v. 4. The transcendentalist years, 1838-39 -- v. 5. The transcendentalist years, 1840-1841 -- v. 6. Life by communion, 1842 -- v. 7. Life by communion years, 1843-1844.
The Western messanger and The Dial -- Orestes A. Brownson and The Boston quarterly review -- The Present -- The Harbinger -- The Spirit of the age -- Elizabeth Peabody and her Xsthetic papers -- The Massachusetts quarterly review -- The Dial (Cincinnati)--The Radical -- The Index -- Appendix: Two uncollected Emerson items.
This essay examines Augustus DeMorgan's chapter on fallacy in his Formal Logic (1847) in order to show how DeMorgan's treatment represents an expansion and advance upon Aristotle. It is important that Aristotle clearly distinguishes among dialectical, didactic, demonstrative, and contentious types of argument, based upon the acceptability of premises and the aims of participants. Appropriating Aristotle's list of fallacies, DeMorgan discusses examples that reveal how the charge and countercharge of fallacy function in contentious argument, which is more widespread than (...) Aristotle imagined. DeMorgan's treatment of fallacy is in the spirit of Aristotle because of its focus on dialogue arguments, but it represents an advance because it expands the possible scenes of contention and shows how unshared premises and the will to win inform many argument situations. The emphasis on contention in natural-language argument puts DeMorgan in the company of his l9th century peers, Mill and Whately. (shrink)
De Morgan's Formal Logic, which was published on virtually the same day in 1847 as Boole's The Mathematical Analysis of Logic, contains a logic of complex terms (LCT) which has been sadly neglected. It is surprising to find that LCT contains almost a full theory of Boolean algebra. This paper will: (1) provide some background to LCT; (2) outline its main features; (3) point out some gaps in it; (4) compare it with Boole's algebra; (5) show that it is a (...) lattice-theoretical formulation of Boolean algebra; (6) discuss some issues of historical priority; and (7) conclude with the puzzle of LCT's lack of influence. (shrink)