The Sundarbans, single largest chunk of productive mangrove forest in the world. Named after it's commercially important tree SUNDARI, Sundarbans- means forests of Sundari trees. The mangrove resources of the Sundarbans comprise of forests, fisheries, wildlife and water. Due to its character it is always mysterious to the nature lover, scientists, researchers and tourists. The Sundarbans have been under some form of management since the 1860s and most of the forests were declared reserved forests in 1875 76. Four, out of the six Ranges created by Curtis are now in Bangladesh portion of the Sundarbans. A professional forester is now posted as the Ranger. A very detailed set of regulations is laid out which cover all financial matters in the Sundarbans. The Divisional Forest Officer (DFO) is an authorized drawing and disbursement officer and as a result he can act as a Treasurer of the forest department.