Encyclopædia Britannica 1771–1860
Topic · 8 of 8 editions · peak 6,871 chars

PORPHYRY

1st2nd3rd4th5th6th7th8th
EditionAs printedTypeCharsLocationvs. previous
1st ed. (1771) PORPHYRYarticle1,699vol. 3, p. 504
2nd ed. (1778–83) PORPHYRYarticle1,707vol. 9, p. 6421reprint · J 0.97
3rd ed. (1797) PORPHYRYarticle6,871vol. 15, p. 400rewritten · J 0.18
4th ed. (1810) PORPHYRYarticle5,419vol. 17, p. 213revised · J 0.66
5th ed. (1815) PORPHYRYarticle5,416vol. 17, p. 213reprint · J 0.93
6th ed. (1823) PORPHYRYarticle5,406vol. 17, p. 213reprint · J 0.93
7th ed. (1842) PORPHYRYarticle3,453vol. 18, p. 447substantially revised · J 0.52
8th ed. (1853–60) PORPHYRYarticle2,755vol. 18, p. 366