“ In 1839 he was again in the East, and was attached to the hydrographical bureau at Batavia. With the assistance of documents collected by the old East India Company, he completed a map of Java in five sheets, accompanied by sailing directions (Amsterdam, 1842) . He remained in the East till 1845 collecting materials for a chart of the waters between Sumatra and Borneo (two sheets, 1845 and 1846) . On his return to Holland he was attached to the naval department with the charge of studying the history of the hydrography of the Dutch East Indies. ”

“ In 1850 Melvill returned to India as lieutenant of the first class and adjutant to Vice-Admiral van den Bosch; and after the premature death of this commander he was again appointed keeper of the charts at Batavia. In 1853 he obtained exemption from active naval service that he might devote himself to a general atlas of the Dutch Indies. But in 1856 he fell a victim to climate, dying at Batavia on the 24th of October. ”