 Merrick founded the Jubilee Mission in 1844/5, and over the next four to five years, translated parts of the New Testament into the Isubu language, set up a brick-making machine and a printing press, and used the latter to publish his Bible translation and a textbook for teaching in Isubu.Merrick made excursions into the interior, as when he climbed Mount Cameroon and when he became the first non-African to visit the Bakoko people.In 1849, Merrick was in ill health.