=3. Rules for Adjusting Sights.=--(i) =To Adjust the Backsight.=--Hold the rifle in the loading position (Sec. 27), so that the lines on the backsight can be seen clearly. Press in the stud (or studs) on the side of the slide with the left or right hand; move the slide until the line is even with the place on the leaf giving the elevation for the distance named, taking care that it is firmly fixed. _Charger-Loading Lee-Enfield Rifle._--Loosen the clamping screw with the thumb and forefinger of the right hand, move the slide until the top is even with the line on the leaf giving the elevation for the distance named, and then tighten the clamping-screw. (ii) =To Lower the Backsight.=--Press the stud or studs inwards with the left or right hand, and draw the slide backwards as far as possible. _Charger-Loading Lee-Enfield Rifle._--Loosen the clamping-screw, lower the slide to the bottom of the leaf with the firefinger and thumb of the right hand, then tighten the clamping-screw. (iii) =Fine Adjustment of the Backsight.=--(_a_) _S.M.L.E. Rifle, Marks III and IV._--Press the stud on the slide with the thumb of the left hand till the worm-wheel can be easily revolved; turn the worm-wheel with the thumb-nail of the right hand until the required elevation is obtained. The stud must not be pressed to such an extent that the worm-wheel is entirely disengaged from the rack. (_b_) _Other Marks._--Turn the fine adjustment screw with the forefinger and thumb of the right hand until the line on the leaf is level with the line on the fine adjustment scale giving the required elevation. (iv) =To Adjust the Long-Range Sights.=--Hold the rifle in the loading position, so that the dial can be seen clearly. Move the pointer to the place on the dial giving the elevation for the distance named, and then raise the aperture sight. CHAPTER IV ELEMENTARY INSTRUCTION IN FIRING Section =24=.--Hints to Instructors. =1.= Instructors will teach by force of example rather than by word of mouth, and be careful to refrain from any form of comment which may discourage young soldiers. Words of command are seldom required except in collective firing instruction, all motions of firing being performed independently, and each man being required to use his own judgment as much as possible. Faults must not, however, be overlooked or allowed to become formed habits. _The essential points of the firing positions are to be insisted upon from the beginning, as the foundation of fire discipline._ =2.= In the early part of training squads will not as a rule consist of more than seven men, who will be assembled round the instructor in a semicircle. The instructor will explain the uses of the different firing positions and illustrate them to the squad. Recruits will practise the motions separately until able to combine them, and _assume each position rapidly and without constraint_.