This was edited by the scientist Sir David Brewster (1781-1868) and published in 1830 by William Blackwood (1808-1830). Organised alphabetically, with more than 150 contributors and 360 copperplate illustrations, the encyclopedia was particularly notable for its scientific articles - such as those on electromagnetism and the polarization of light - many of which were written by Brewster himself. Brewster's efforts meant that Scotland had produced a worthy complement, or even rival, to the original Encyclopaedia Britannica.