This research deals with the life and literary works of Butrus-Ul-Bustani, an Arab literary figure of the 19th Certury.  His contributation to Arabic Language and literature is mentioning.  The Muhit-Ul-Muhit and Dairat-Ul-Marif are his most famous and valuable works.  The first one is a dictionary of Arabic Language, that left positive effective on the dictionaries written after it, because the later lexicographers, who produced dictionaries, were impressed my the methodology of Al-Muhit.  Another feature of this dictionary is that the author, inspite of being a Christian, does not hesitate refering to the Holy Quran and Hadith, during deep explanation of Arabic words, that shows his belief in the authenticity of both the aforesaid sources.  The Dairat-Ul-Marif is the first encyclopeadia in Arabic compiled by an individual author according to modern western style.  It was a scholarly gift to the Arab and to the World of knowledge.