A Syllabic Dictionary of the Chinese Language: Arranged According to the Wu-Fang Yuen Yin, with the Pronunciation of the Characters as Heard in Peking, Canton, Amoy, and Shanghai or the Hàn-Yīng yùnfǔ 漢英韻府, compiled by the American sinologist and missionary Samuel Wells Williams in 1874, is a 1,150-page bilingual dictionary including 10,940 character headword entries, alphabetically collated under 522 syllables. Williams' dictionary includes, in addition to Mandarin, Chinese variants from Middle Chinese and four regional varieties of Chinese, according to the 17th-century Wufang yuanyin 五方元音 "Proto-sounds of Speech in All Directions".