No.I. The Delta Of The Ganges; With The Adjacent Countries On The East: Comprehending The Southern Inland Navigation. J. Rennell. 1 December 1778. Scale of [40] British Miles [= 3.4 inches (approximately 1:750,000)]. Inset: Samoolagur Or Sumookgur Fort Near Bankibazar. Scale of [500] Yards [= 0.85 inches (approximately 1:21,000)].