Summary
In the article are presented data about a new-found copy of the Glagolitic Services for Conferring the Dignity of the Great Schema on a Monk in a manuscript prayer-book from XIII c. which is kept at Zograf Monastery on Mouth Athos. Judging by the linguistic analysis, the manuscript was created in a scriptorium, which was on the border of South-west Bulgarian, Serbian and Macedonian dialects. This important copy is the beginning of the main textological and lexicological correction of the Old Bulgarian Services for Conferring the Dignity of the Great Schema on a Monk, which are known to science thanks to Euchologium Sinaiticum from X c. and which were copied during the following centuries in Bulgaria, Serbia and Russia.