152 RULE. 



judge distance correctly by the eye, and anyone 

 possessing good vision may train himself most 

 effectually in this art for all practical purposes. 

 This, however, can only be accomplished by con- 

 tinual practice and careful observation. When 

 engaged in ball-practice at a target placed at 

 known distances, the tyro should carefully notice 

 the apparent height of the markers at each range, 

 remembering that in fine clear weather objects 

 standing in a strong light will appear much nearer 

 than they really are, and vice versa in cloudy and 

 damp weather. 



At 50 yards, the features of a man 

 Eule. 



may be clearly identified, and his 



complexion, arms, accoutrements, and dress dis- 

 tinctly perceived, the buttons and the badge on 

 his forage-cap being distinguishable. At 100 

 yards, the features become indistinct, the buttons 

 appear in a line, and the badge can be only 

 faintly discerned. At 200 yards, the face ap- 

 pears like a whitish ball under the line of the 

 cap, and the buttons and badge become invisible. 



