Experiments upon Gunpowder, 



15 



Of the Bullet. 



Diameter, 0.75 of an inch. 

 Weight in lead, 580 grains. 



Of the Pendulum. 



Total length of the pendulum from the axis of 

 suspension to the bottom of the circular 

 plate ....... 



Diameter of the circular plate to which the tar- 

 gets were fastened .... 



Distance between the shoulders of the pivots 



Diameter of the pivots .... 



Inches. 



13- 

 3-8 



.27 



Weight of the iron part of the pendulum, 47 lbs. 4 oz. 



Of the Pendulum with the I'argets fixed to it^ as it was 

 prepared for making the Experiments. 



N. B. — The measure is English feet and inches, and 

 the weight is avoirdupois. 



Having now gone through with the description of all 

 the principal parts of the apparatus, I shall proceed to 

 give an account of the experiments ; and as it may be 

 satisfactory to see the method of conducting these en- 



