In 1885 his dreams were realized and he was posted to
Fort St. James, the fur trading and missionary center in the Carrier region. Father Morice rapidly learned the Carrier language and became the only missionary to speak more than rudimentary Carrier. Within a few months of his arrival he created the first writing system for Carrier, the
Carrier syllabics, by making a radical adaptation of the
Cree syllabics. From 1891 to 1894 he published a bimonthly newspaper, the ''
Dustl'us Nawhulnuk'', in Carrier. He was responsible for the translation of the catechism and many hymns and prayers into the language. Father Morice was the first person to recognize all of the phonological distinctions in an
Athabascan language and write it accurately. He was also the first person produce extensive documentation of an Athabascan language. His magnum opus was his massive two volume
The Carrier Language: A Grammar and Dictionary, which immediately made Carrier by far the best documented Athabascan language of the time. ==Disputes with the Church==