264 
MINUTES OF PROCEEDINGS OF 
Table of Experiments on Cast-iron Cylinders, Rifled on various 
Systems. 
I 
•s 1 
& 
«3 
$ §! 
ft 
*3 
Name. 
Nature of Rifling. 
.2 a g 
Remarks. 
o 
i s 
& 
ft Is 
1 
Mr Lancaster’s . . . 
Oval. 
7-02 
2 
Experimental .... 
Decagon. 
23-29 
3 
Sir W. Armstrong’s . . 
Three grooved shunt. . 
25-65 
4 
Commander Scott’s . . | 
Three grooves, hut only 1 
27-95 
two ribs bearing . . ) 
5 
Mr Whitworth's . . . 
Hexagon. 
28-07 
6 
Commander Scott’s . . | 
Two grooves opposite to") 
29-00 
each other . . . .) 
7 
Experimental . . . . | 
Two grooves opposite to ^ 
each other . . . .) 
29-18 
8 
Mr Lynall Thomas’s. . 
Three ribs. 
35-09 
9 
Commander Scott’s . . 
Three grooves .... 
35-30 
C At this weight the plug 
10 
Sir W. Armstrong’s . . 
Ten grooved shunt . . 
46-50 
■< broke, and the cylinder 
(.shewed a slight crack. 
