Language on Vacation: An Olio of Orthographical Oddities is a 1965 book written by Dmitri Borgmann. It is generally considered to be the first book solely devoted to logology that was more about supplying information than giving puzzles. Logology is the study of words with an emphasis on letter patterns, often as part of recreational wordplay such as anagrams, palindromes and isograms, rather than on meaning. The word "logology" was popularized, by this book.