Karl Graul was appointed the director of the Lutheran Leipzig Mission in 1844. The Lutheran mission had succeeded the Danish-Hale mission in
South India. During his stay in India, Graul mastered the Tamil language. Later Graul wrote
Bibilotheca Tamulica seu Opera Praecipua Tamuliensium (1854–1865). A work in 4 volumes, it contains in its third and fourth volumes the first complete translation of the
Tirukkural in
Latin,
German, and the standard spoken Tamil with notes and glossaries. It was published by his student
Wilhelm Germann the year after Graul's death in
Erlangen. Graul also wrote a
Tamil Grammar in German (1855). ==Missiology==