516 
the development oe abmottr. 
disintegrated at an early stage, and British plates very shortly after 
this date were called upon to bear a much more severe strain for ac¬ 
ceptance. In short this trial is mainly valuable as showing that 
Messrs. Witkowitz, in spite of earlier successes, cannot make homo- 
Britieh test g eneous plates to compare well with their own Harveyed plates of the 
fS 4-inch same date, and such plates admit of no comparison with the hard-faced 
P late ®. p] a tes of Krupp or other makers. 
4 -in Opiate. Fig 23 herewith shows a Cammell 4-in. plate, 4 ft. x 4 ft., of about 
FiQ r* 
