LINE OF SIGHT. 143 



the ball having dropped 4% feet in that distance. 

 The point-blank range of an Enfield is about 

 80 paces ; but they vary, as more or less elevation 

 is given to the muzzle of the rifle, or according 

 to the strength of the propelling power. 



The line of sight, or aim, is an 



Line of Sight. 



imaginary straight line taken from the 



pupil of the eye through the centre of the back- 

 sight, along the top of the fore-sight, to the 

 object intended to be hit. The back-sight is so 

 arranged as to give the proper elevation for 

 different distances. The further the object is to 

 be aimed at, the greater the elevation required ; 

 and this is given by raising the sliding bar of 

 the back-sight, which is marked with lines up to 

 900 yards. 



Accuracy of shooting is greatly de- 

 Sights. 



pendent upon the sights being care- 

 fully adjusted, and fitted exactly parallel to the 

 axis of the barrel. If the back-sight is too much 

 inclined to the right, or the front-sight too much 

 to the left, the rifle will shoot to the right of the 



