143 
After discussing the results of these experiments, in some 
respects anomalous, gun A being a peculiarly fortunate cast, 
it appeared that the other guns were improved by tiie 
remelting and pressure of head, so as to give the best result 
with E, which had been subjected to both these processes. 
In conclusion the Author alludes to experiments on guns cast 
with a core, and expresses his belief that the great practical 
difficulties which beset that process must prevent its appli- 
cation, although theoretically calculated to produce guns 
of greatly increased strength. 
