Farrow's military encyclopedia : a dictionary of military knowledge . stretch-ing from the foot of the Carpatliians in Galicia to theUral ^Mountains, including Poland and Russia, thedrainage area of the Danube in Hungary, and theportion of Europe which is bounded by the Elbe,the Hartz mountains, France, and the sea. Plainsof comparatively small extent, but presenting thenecessary characteristics in perfection, are found inalmost all countries. PLAIN CLOTHES.—A citizens every-day dress, asapplied to an officer not in uniform; tliis dress is alsoknown liy the familiar name of mufti. It is left t

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Farrow's military encyclopedia : a dictionary of military knowledge . stretch-ing from the foot of the Carpatliians in Galicia to theUral ^Mountains, including Poland and Russia, thedrainage area of the Danube in Hungary, and theportion of Europe which is bounded by the Elbe, the Hartz mountains, France, and the sea. Plainsof comparatively small extent, but presenting thenecessary characteristics in perfection, are found inalmost all countries. PLAIN CLOTHES.—A citizens every-day dress, asapplied to an officer not in uniform; tliis dress is alsoknown liy the familiar name of mufti. It is left totlie discretion of General Officers Commanding, topermit the use of plain clothes for the purpose ofrecreation : otherwise all Officers must appear in uni-form in camp or quarters, or when attending publiclialls witliin the district iu which they are quartered. PLAIN COMPASS.—The plain compass, as shownin the drawing, lias a 6-inch needle, and is furnishedwith levels, sight-vanes, socliet, etc. The compass-box is in the same piece with the main plate, and the. instrument is used mainly in the surveys of new lines, or in tlie preparation of maps, where i.be variation ofthe needle is not recjuired. To adjust tlie compass, first bring the bulibles into the center, by the pressureof the hand on dilTerenl parts of the plate.and thenturn tlie compass half-way around; should the bub-bles run to the end of the tubes, it would indicatethat those ends were the highest; lower them bytightening the screws immediately under, and loo.seu-iiig those underthe lowest ends until, by estimation, tlu error is half removed ; level ti)c pliite iigain. andrepeat the first openition until the Imlililes will re-main in lUr center, during an entire revululion ofthe compass. The siirhts may next be tested by ob-serving through the slits a tine hair or thread, madeexactly vertical by a pluinli. Should the hair ap-pear on one side of the slit, the sight must be ad- justed by filing off its under surface