The purpose of this paper is to put on record the discovery of various sites, containing traces of prehistoric man, in the neighbourhood of Bombay.

The area of greatest importance is that of Worli. It is a cotton milling suburb of Bombay, distant some 4 miles from the Fort, and is situated on low lying marshy ground and bounded to the West by a low steep hill having a maximum height of 100 ft. O.D., and consisting of igneous basalt overlying amygdaloidal trap with a dyke of F.W. strata between. This dyke contains fossils of marsh tortoises, frogs and plants resembling bulrushes. The basalt is capped with red earth which is decomposing trap, and contains nodules of agate and blocks of chert. West of the hill is the Arabian Sea. The northern extremity of this hill ends in a spur which juts out into the sea, and here is the fishing village of Koliwada, consisting of mud huts.