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7 
there are no streams. The plateau of North Cohasset drains 
directly by several short brooks, of which the most important 
is Turkey Hill Run, rising in. the swamp between Turkey and 
Scituate Hills, into the Strait’s Pond trough, the Atlantic and 
Little Harbor. The remainder of Cohasset and northern 
Scituate are tributary either to Cohasset Harbor and its ex- 
tension, the Gulf, or to Bound Brook, which is the principal 
affluent of the Gulf. Considerable attention has been given to 
tracing out not only the actual drainage lines or streams, but 
also the areas of obstructed drainage, the ponds, swamps and 
marshes ; and it is believed that these features are represented 
more accurately on the maps accompanying this paper than on 
any earlier published maps. 
Desides Strait's Pond, which is due to ап artificial barrier. at 
its western end and is mainly salt water, the only important 
pond in this entire distriet of Hull, Cohasset and northern 
Scituate is Scituate Pond (sometimes called Lily Pond) in 
the southern central part of Cohasset. — It is tributary to Bound 
Drook; and it is also connected on the northeast with a swampy 
tract from which a much smaller brook flows directly into the 
Gulf. Scituate Pond is thus very nearly an example of a basin 
having two distinct outlets at the ваше level or in a state of equi- 
librium. It is probably due primarily to the accumulation of 
modified drift in the valley of Bound Brook ; and the general 
absence of ponds in this district may be attributed to the lack of 
continuity of the sand plains. Even the small kettle ponds 
of other districts, with a few exceptions, as in the vicinity 
of Little Harbor where the principal plain has its best devel- 
opment, are wanting here. Neither is the form of the ground 
favorable to the view that any important ponds have been obliter- 
ated by the cutting down of barriers or the growth of silt and bog: 
deposits. If the valley of Bound Brook were cleared out, the 
Gulf would doubtless be extended inland to Scituate Pond, if 
hot considerably beyond ; and this main drainage channel and 
its affluents are now so nearly on a base-level basis that they 
are bordered throughout by broad swamps and meadows, 
