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TIE KiFLE.--Ne hnd ln .s'E ile ankees the following m reference lo shc principle of construction ln the rife, which is so pecsI- liarIy the American weapon that all should comprehend its principle of action:

 Many persons. who are sery expert ia ihe use of she rifle, know naahing of the psiaei- pie on which |, operates, aud would be as a loss If asked why grooved barrel throws q bali truer han smoothe bore. The rea- sons are these:

 In the first place no builci is or can he cast perfectly spherical 0ae side is always heavier than inc other. and the ball. there- fore sweryes from the right line of ps.jec- iion. However hard Ii may be to prove this theoretically, practice demonstrates Il. The same smooth bore, immaseahly fixed, twice loaded with the saEre charge. of ths same powder, an with balls cast in the same moEid wift nos plan. them both ,n ,le same spot- al the same distance.

 Tine rifie barrel Is iema'e screw. which gives the tigh,ly driven ball rotary raosion; so that f the bullet. or rather fife slug. swerves with one twist of lhe screw. aaosh- CT revolution corTecss the error. There are but three motions in rifle ball, the sssaigh, forward. the spiral and the downward, eaaS- ed by the power efgavity. A rifle of thir- ty to the pound drops it's ball abou, .oos ia hundred yards. Rifles are sighied, there fore, to meet ihis devntioa. On leasing the barrel. the ball moves above ilie line Of sight continually falling in pasaboEic curve, Jul il intersects Ii The point of intersection k called the poig, 5Iask

 Who invented the ride is unknown. its principle was known to the North Aifxfrau Indians before the discovery of our continent Their arrows are festhered spiraiiv, and move precisely in inc manner of a rife bali