Encyclopædia Britannica 1771–1860
Topic · 6 of 8 editions · peak 303 chars

HEPTAGONAL NUMBERS

1st2nd3rd4th5th6th7th8th
EditionAs printedTypeCharsLocationvs. previous
2nd ed. (1778–83)HEPTAGONAL NUMBERSarticle292vol. 5, p. 3580
3rd ed. (1797)HEPTAGONAL NUMBERSarticle303vol. 8, p. 437revised · J 0.90
4th ed. (1810)HEPTAGONAL NUMBERSarticle292vol. 10, p. 396revised · J 0.90
5th ed. (1815)HEPTAGONAL NUMBERSarticle292vol. 10, p. 396reprint · J 1.00
6th ed. (1823)HEPTAGONAL NUMBERSarticle292vol. 10, p. 396reprint · J 1.00
7th ed. (1842)HEPTAGONAL NUMBERSarticle293vol. 11, p. 240revised · J 0.86