<P> After Harkness rediscovered the two copies of the book, Jim Reeds uncovered the mathematical formula used to construct the tables (starting with the seed word given for each table), and identified errors of various types made by the manuscripts' scribes . He showed that a subset of the errors were common to the two copies, suggesting that they were derived from a common ancestor which contained that subset of errors (and thus was presumably itself a copy of another work). </P> <P> Although Reeds deciphered the construction algorithm and the code words used in crafting the tables, the actual contents and significance of the tables remain mysterious . He writes, "The treatise in the Book of Soyga which discusses the tables, Liber Radiorum, has a series of paragraphs mentioning the code words for twenty - three of the tables, together with number sequences which stand in unknown relation to the words ." </P>

John dee and the magic tables in the book of soyga