determine the Velocities of the Rijie Bullets commonly used. 395 

 Table VIII.— Sugarloaf Bullet at 80 feet. 



Mean velocity = 852"13 feet. 



Mean quantity of motion = 81 "53 lbs. 



Table IX.— Belted Bullet at 80 feet. 



Mean velocity = 901-88 feet. 



Mean quantity of motion = 62*23 lbs. 



Collecting the preceding results into one table, we obtain- 

 Table X. 



From this table it appears — 



1st. That the quantity of motion communicated by a given 

 quantity of powder to the INIinie bullet, discharged from the regu- 

 lation rifle, is greater than the quantity of motion possessed by 

 any of the other bullets; this result being due partly to the 

 greater weight of the bullet, and partly to the greater length of 

 the rifle. 



2nd. That the quantity of motion communicated to the belted 

 Ijiillit, discharged from the two-groove or Brunswick rifle, is less 

 than that possessed by the other rifle bullets, this result being 

 due to tiic lesser weiiclit of the belted bidlet. 



