. Physical and commercial geography; a study of certain controlling conditions of commerce. the greatPo River, the natural line ofentrance to Italy, is rendereduseless by a rapidly growingand constantly shifting delta. The old port of Adria, which gavethe name to the Adriatic Sea, is now 14 miles inland. Two places on the west coast of theUnited States, Puget Sound and SanFrancisco Bay, possess natural harborsites of high grade. Each owes itsexistence to the depression of ancienthighlands, the Strait of Juan de Fucaas well as the Golden Gate being typi-cal drowned valleys (§ 28). The Co-lumbia
. Physical and commercial geography; a study of certain controlling conditions of commerce. the greatPo River, the natural line ofentrance to Italy, is rendereduseless by a rapidly growingand constantly shifting delta. The old port of Adria, which gavethe name to the Adriatic Sea, is now 14 miles inland. Two places on the west coast of theUnited States, Puget Sound and SanFrancisco Bay, possess natural harborsites of high grade. Each owes itsexistence to the depression of ancienthighlands, the Strait of Juan de Fucaas well as the Golden Gate being typi-cal drowned valleys (§ 28). The Co-lumbia River is blocked by bars (§ 24),and the long stretches from Astoriato San Francisco and from San Fran-cisco to San Diego offer little oppor- _tunity for safe anchorage of Diego has a barrier harbor with28 feet of water over the bar, and LosAngeles has, at great expense, con-structed anchorage at San Pedro(§ 33).San Francisco stands preeminenton the Pacific coast because it is the only high-grade harbor bet\veenTacoma and the Mexican border. New York, in the drowned valley. Fig. 10 /. Mouth of the HousatonicRiver OCEAN, COAST LINE, AND HARBOR 33
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcommerc, bookyear1910
