VOL. LXXI.] 



HI 



■e o 



The 

 charge of 

 powder. 



Grs. 



N°l 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



l6 



17 



18 



19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 2S 

 29 

 30 

 31 



32 

 33 



34 

 35 

 36 



37 

 38 



39 

 40 

 41 

 42 



208 



4l6 

 208 

 104 

 310 



330 



330 



165 



165 



330 



165 



165 



-a 



bo 



B S 

 £•= 



*-. o 



c 



o 



> 



fa. 



290 



218 



3.6 

 1.8 



■9 

 2.7 



2-9 



2.7 

 2.9 



1.45 



1.45 



2-9 



3.2 

 1.45 



1.45 



-3 3 



In. 





 .5 





 .5 





 .5 













 1.22 

 2.65 



2.65 



2.65 

 







1.32 



2.6 



1.3 







o 



o O J 



^ 3 



■S * 3 



o M' ■ 



3 - 

 O 



Grs. 



Inches. 



2.6 



1-9 



1.3 



2.6 



PHILOSOPHICAL TRANSACTIONS. 



General table of the experiments. 



c a 



in ^ 



CD "S 

 -3 , 





<u 



ff^ 





 '^ ^ c 



3 .£3 Oh 



pq 



Inches. 



13.2 

 14.5 

 12.6 



8.5 



5.2 



9-6 



10.1 



11.85 



10.9 

 10.9 



13.25 

 10.4 



6.8' 



6.85 

 6.7 

 6.3 

 7.5 

 6.8 

 7.8 

 8.05 

 10.2 



5.9 



6.65 



5.45 



7.9 

 7 ■ 

 7.4 



2:5 § 



64.5 

 65. 



65. 



65.25 



64.6 



65. 



64.75 



65.25 



61.5 



63.5 



63.5 



63. 



62.2 



60.6 

 6l,5 

 65. 



63. 

 64. 

 62.4 

 62.6 



63. 



60.25 

 62. 

 6i. 

 58.6 



6.45 

 6.31 

 6.45 



64.6 



65. 



65. 



Inches. 



to o 



J3 <D 



.-> <d 



c 

 XI 



33.5 

 36.5 

 17.8 

 18.5 

 38.68 

 38.48 

 6.1 

 16.5 

 17.69 

 10.18 

 24.69 

 24.95 

 24.9 



26.2 



12.7 



26.3 



26.4 



14.73 



14.2 



14.8 



14.58 



14.68 



14.95 



15.6 



16.15 



26. 



28.1 



13.2 



15.15 



15.45 

 12.65 



15.45 



15.25 



16.3 



17.9 



23.5 



24.8 



18. 



17.71 



17.91 



Ft. in 

 sec 



P 



1267 

 1399 

 1213 



Remarks. 



1281 

 782 

 1459 

 1527 

 IS01 

 1646 

 1748 

 2060 



1619 

 1633 

 1084 

 1093 

 1071 

 1035 

 1142 

 1004 

 1153 

 1192 

 1559 

 1536 

 914 

 1027 



839 

 839 



1217 

 1129 

 1161 

 1277 

 1497 



1236 

 1197 

 1230 



First day. 



Second day. 



The pendulum gave way. 



4 bullets fired at once. 



Ditto. 



Without any bullet. 



Ditto. 



Pen. N° 2j very fair; 3d day. 



'.The powder was lighted by the long vent- 

 r tube. 



The barrel very much heated.. 



> The short vent-tube was made use of. 

 Fourth day. 



f Not leathered; weight of the bullet and 

 ) wad 603 grs. In exp. N° 32 no less than 

 \ 40 large grs. of unfired powder were driven 

 (_ through the screen. 



~) In these 6 experts, the bullets were 

 I leathered, and the powder was lighted by 

 I the valve-vent. 



! 



The pend. N° 2 ruined. 



5th day ; medium velocity in these expe- 

 riments and N°47, 1225. 



N 2 



