Encyclopædia Britannica 1771–1860
Topic · 5 of 8 editions · peak 898 chars

OCULAR SPECTRA

1st2nd3rd4th5th6th7th8th
EditionAs printedTypeCharsLocationvs. previous
3rd ed. (1797)OCULAR SPECTRAsub_entry897vol. 17, p. 677
5th ed. (1815)OCULAR SPECTRAsub_entry898vol. 19, p. 575reprint · J 1.00
6th ed. (1823)OCULAR SPECTRAsub_entry898vol. 19, p. 575reprint · J 1.00
7th ed. (1842)SPECTRAarticle885vol. 20, p. 531reprint · J 0.96
8th ed. (1853–60)SPECTRAarticle586vol. 20, p. 503substantially revised · J 0.60