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The Popular Encyclopedia ; or , Conversations Lexicon was a British encyclopaedia published by Blackie & Son , during the 19th century .. encyclopaedia. encyclopaedia. Blackie & Son. Blackie and Son Limited. Conversations Lexicon. Encyclopedia Americana. It was originally based on the American Conversations Lexicon edition and translation , by Francis Lieber ; which in turn was based on the German Conversations Lexicon in its 7th edition .. Conversations Lexicon. Encyclopedia Americana. Francis Lieber. Francis Lieber. The first editions were edited by Alexander Whitelaw , but the 1883 edition was led by Charles Annandale .. Alexander Whitelaw. Alexander Whitelaw ( editor ). Charles Annandale. Charles Annandale. The 1836 version of the encyclopaedia was titled  :. encyclopaedia. encyclopaedia. An 1841 edition was published in Glasgow , in 7 volumes , royal 8vo , and edited by Alexander Whitelaw .. Alexander Whitelaw. Alexander Whitelaw ( editor ). 8vo. 8vo. The specific mention that it was originally an updated copy of an American encyclopaedia had been dropped , but the original name had been incorporated into the title  :. encyclopaedia. encyclopaedia. The 1874 edition dropped the dissertations and the double quotes around Conversations Lexicon in the title  :. Conversations Lexicon. Encyclopedia Americana. The 1881 edition had a similar title to the 1874 edition  :. All the editions were published by Blackie and Son of London , and the number of volumes went up to fourteen .. The preface to the 1841 edition explained where the Popular Encyclopedia originated and how it differed from other British encyclopaedias  :