History of the Encyclopædia Britannica the criteria by which the articles were sorted were not obvious even to scholars, despite Dr. Adler's claims that the sorting followed naturally from the "Propædia's" outline of all knowledge. In 1985, the "Britannica" responded to reader requests by restoring the index as a two-volume set. The number of topics indexed by the "Britannica" has fluctuated from 500,000 (1985, the same as in 1954) to 400,000 (1989,1991) to 700,000 in the current 2007 print version. Presumably, this recent increase reflects the introduction of efficient electronic indexing, since the size of the encyclopedia has remained nearly constant at approximately 40 million
Park Benjamin Jr. "The Battle of Dorking" (1871); at least six other stories in this collection fall in that category, and Benjamin's predates the next by seven years. These stories are defined by describing an imaginary invasion, having a clear purpose to expose the weaknesses of the author's home country defenses, and showing how those defenses could be improved. Many of these invasion stories use famous contemporaries as characters, but Benjamin's story is the only one that kills off some of these real people, like Captain Greer, Lieutenant-Commander Jewell and Vice-Admiral Rowan (at the end of Chapter II). His work is the first