160 STATE OF THE ATMOSPHERE. 



fore, in such, a case, aim should be taken to the 

 right and low ; or to the left and low, if the cur- 

 rent of air comes from the left and rear. 



Correct judgment in making the proper allow- 

 ances for the effect of various winds upon the 

 flight of the projectile can only be gained by 

 practice in all kinds of weather, but the above 

 hints may assist the novice. 

 State of the ^ ne sta ^ e f f ^ e atmosphere consi- 



Atmosphere. 



In damp weather, when the atmosphere is dense, 

 its resistance to the flight of the bullet is 

 increased, and consequently greater elevation 

 should be given. In fine clear weather, on the 

 contrary, the resistance is less, and the bullet 

 rises, therefore less elevation is required. Hu- 

 midity in the atmosphere also affects the range 

 of the bullet in a different manner, as it has a 

 certain influence on ignition of gunpowder, 

 which in damp weather is not so rapid as in fine ; 

 therefore, on such days larger charges should be 

 used than on hot summer days. 



