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Rocky Mountains , and after an E. course ofabout 1,600 m. joins the Missouri , 600 in. fromthe Mississippi .

PLATTE, Little , r. La. which runs into theMissouri, 349 m. from the Mississippi .

PLATTEKILL, t. Ulster co. N. Y. 22 m. S.from Kingston. Pop. 1,936.

PLATTSBURG, t. and cap.Clinton co.N.Y. on W. side of Lake Champlain , at the mouthof the Saranac, 160 m. N. from Albany , 60 S.from Montreal . Lon. 73° 25' \V.; lat. 44° 42'N. Pop. 4,913. The U. S. barracks are 4 m.above the village, on the Saranac. Plattsburgvillage is handsomely laid out; it contains acourt-house, a jail, a Presbyterian church, anacademy, a bank, and a printing-office, and isa place of considerable trade. This place ismemorable for the effectual resistance, on the11th of Sept. 1814, of 2,500 Americans , underGen. Macomb, to the British force of 14,000men, under Sir George Prevost ; and in thebay before tliis town, Commodore M’Donoughobtained a signal victory over the British fleet.

PLEASANT, t Fairfield co. Ohio . Pop.1,763.

PLEASANT, t in the SW. corner of Frank-lin co. Ohio . Pop. 164.

PLEASANT, t in the SE. corner of Madi-son co. Ohio . Pop. 857.

PLEASANT, t. in the north-eastern part ofClarke co. Ohio . Pop. 821.

PLEASANT, t Brown co. Ohio , in whichis situated the town of Ripley. Pop. 1,917.

PLEASANT GROVE,v. Lunenburg co. Va.

PLEASANT GROVE, v. Orange co. N.C.

PLEASANT GROVE, v. Greenville dis-trict, S. C.

PLEASANT PLAINS, v. Franklin co. Ten.

PLEASANT RIVER, r. Me. which runsinto the sea, between Columbia and Addison,and forms a bay at its mouth, to which it givesname, Ion. 67° 40' W.; lat. 44° 35' N.

PLEASANT VALLEY, v. in Clinton,Dutchess co. N. Y. 7 m. E. of Poughkeepsie .This is a flourishing village, and has consider-able manufactories.

PLEASANT VALLEY, v. in Elizabeth-town, N. Y.

PLEASANT VALLEY, t Fairfax co. Va.

PLEIN, r. which rises in the N\V. Terri-tory, flows into Indiana , and unites with theThcakiki, to form the Illinois .

PLESIS, v. Jefferson co. N. Y. 184 m. NW.from Albany .

FLUCKEMIN, v. Somerset co. N. J.

PLUIE, La, lake, N. America . Lon. 93°40' W.; lat. 48° 50'N.

PLUIE, La , r. which forms a communica-tion between Lake la Pluie and the Lake ofthe Woods .

PLUM ISLAND, isl. in the Atlantic, nearthe coast of Massachusetts , between Newbury-port and Ipswich, 9 m. long and 1 broad. Itssouth end is on the north side of the entranceof Ipswich harbor, and its north end on thesouth side of the entrance of Newburyport har-bor. Near the north end there are two lights.Several houses have been erected on this islandby the Marine and Humane Society , for the2 X

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relief of distressed mariners. This island is aplace of much resort in the summer.

PLUM ISLAND, small isl. near the NE.coast of Long Island, in the state of N. Y. Itis annexed to Southold.

PLUYE, r. In. which runs into the Thc-akiki.

PLYMOUTH , t. Windsor co. Vt. 18 m. W.from Windsor. Pop. 1,237. A remarkablecavern was discovered in this town in 1818. Itis situated at the foot of a mountain, near thehead of Black river, and has 5 apartments, thelargest of which is 30 feet long, 20 broad, and20 high. Two of the others are nearly aalarge. The rocks which form the cavern arewholly of limestone. Numerous petrifactionsare found here, most of which resemble icicleshanging from the rocks.

PLYMOUTH , t. Grafton co. N.II. on W.side of the Merrimack, 31 m. SSE. from Haver-hill, 43 N. from Concord, 70 NW. from Ports-mouth. Pop. 1,175. In the north part of thetown there is a pleasant village, containing acourt-house and a Congregational meeting-house. Tiie courts of the county arc held al-ternately here and at Haverhill.

PLY MOUTH, co. Mass, bounded by CapeCod and Boston Bays NE. Barnstable co. andBuzzard’s Bay SE. Bristol co. SW. and Nor-folk co. NW. Length 30 m. mean width 20.Pop. in 1820, 38,136; in 1830, 42,993. It isthe original seat of the colonization of NewEngland. Chief town, Plymouth .

PLYMOUTH, s-p. and cap. Plymouth co.Mass. 36 in. SSE. from Boston . Lon. 70° 30'W.; lat. 41° 58' N. Pop. 4,751. It containsa court-house, a jail, a bank, and 4 houses ofpublic worship-—3 for Congregationalisls, and1 for Baptists . The harbor is spacious, butshallow. Vessels drawing more than 10 or 11feet of water cannot approach the wharveswithout being lightened at some distance fromthem. A small stream which passes throughthe town, furnishes valuable water-power,where have been erected several importantmanufactories of cotton and woollen goods, andextensive iron works. Plymouth is the oldesttown in New England . The first settlers landed here on the 22d of December 1620; thisanniversary is still observed. The rock onwhich they landed was conveyed, in 1774, tothe centre of the town.

PLYMOUTH , t. Litchfield co. Ct. 10 m.SE. from Litchfield. Pop. 2,064.

PLYMOUTH, t. Chenango co. N. Y. 7 m.NW. from Norwich, 107 W. from AlbanyPop. 1,591.

PLYMOUTH, t. Luzerne co. Pa. on theSusquebannah, nearly opposite Wilkesbarre .

PLYMOUTH, t. Montgomery co. Pa .

PLYMOUTH , s-p. and cap. Washington co.N. C. near the mouth of the Roanoke , 20 m. S.from Edenton.

PLYMOUTH , t. the northern limits ofRichland co. Ohio .

PLYMOUTH , v. Windsor co. Vt. 15 m.SE. by E. from Rutland .

PLYMPTON, t. Plymouth co. Mass. 10 m.NW. from Plymouth, 32 S. from Boston . Pop.