1. Passages in italics are surrounded by _underscores_. 2. The original text includes Greek characters. For this text version these letters have been replaced with transliterations. 3. Numbered subscript is represented using underscore. For instance, a_2 indicates letter a with subscript 2. 4. The original text includes certain characters with overline. For this version, such letters have been preceeded with equals sign enclosed in square brackets. For instance, [=a] indicates letter a with overline. End of Project Gutenberg's The Seven Lamps of Architecture, by John Ruskin