New geographies . Fig. 42. — Mouth of a large river where it pours its water into the ocean. banks near their sources, instead of high rockyones, and they may have no rapids or of emptying directly into the ocean,they may enter other rivers as tributaries, orthey may pour their waters into lakes. But,in spite of such differences,other rivers are much likethis one in most there is a river near you,how does it resemble _ theone described ? How does itdiffer from it ? We have seen thatfrom its source to its The meaning mouthariv- of nyer system er may re- ^ni river basin
New geographies . Fig. 42. — Mouth of a large river where it pours its water into the ocean. banks near their sources, instead of high rockyones, and they may have no rapids or of emptying directly into the ocean,they may enter other rivers as tributaries, orthey may pour their waters into lakes. But,in spite of such differences,other rivers are much likethis one in most there is a river near you,how does it resemble _ theone described ? How does itdiffer from it ? We have seen thatfrom its source to its The meaning mouthariv- of nyer system er may re- ^ni river basin ceive Water from hundreds of tribu-taries. Thus the rainthat falls in placeseven hundreds of milesapart may at last bebrought together in asingle main a main stream,with all of its tributa-ries, is called a river. Fig. 43. — Map of a river system. Point outthe source; the mouth; the main stream;several tributaries. All the country that is drained by asingle main stream is called a river all the land drained by the Missis-sippi River and its tributaries forms theMississippi Basin. Inwhat river basin is yourhome located? Very great quantitiesof soil are carried awayby rivers, ^^^^ ^^^^^ and much do with their rock is ^^^™^°^ground up and carriedoff by them. This loadof rock bits that riverscarry is called of it comes fromthe pebbles that arerolled about in thestream bed, and somecomes from the streambed itself. What be-comes of it all? If you have seen asidewalk, or a field, 36 HOME GEOGRAPHY flooded with water, you perhaps remem-ber that a thin layer of sand or fine 1 PI d 1 ? ™^ ^^^ ^^^^ when the flood disappeared. The sand and mud were borne along by the current,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeography, bookyear19
