Sugar, rice, indigo and tropical fruits are the chief products of the fertile district in which the town lies; it is widely known for its fish-ponds and its excellent fish, and its principal manufactures are jusi, pina, ilang ilang perfume and sugar.
Hilly plateaus are still in the same geological phase, and are dotted with numberless lakes and ponds, while the rivers continue to dig out their yet undetermined channels.
Plymouth is a popular resort for visitors,, having, in addition to its wealth of historic associations and a healthy summer climate, thousands of acres of hilly woodland and numerous lakes and ponds well stocked with fish.
In freshwater lakes and ponds, especially if the water is stagnant, aquatic plants are abundant.
Flint's Pond, a mile eastward, allowing for the disturbance occasioned by its inlets and outlets, and the smaller intermediate ponds also, sympathize with Walden, and recently attained their greatest height at the same time with the latter.