244 
MINUTES OF PROCEEDINGS OF 
On the 5th and 6th August, two of the 8-inch iron howitzers, two of 
the 10-inch iron howitzers, and four carronades, had been placed on high 
traversing platforms, so as to raise them nearly to the natural level of the 
country according to Carnot's system. But His Grace the Master-General, 
who examined the breach at this period, having given directions that all the 
ordnance should be placed on common platforms, the use of the traversing 
platforms was discontinued. It had previously been observable, that no 
advantage or superior accuracy of fire attended raising the guns, which was 
merely done that the experiment might more scrupulously follow Carnot's 
system, with respect to the relative levels of the wall, counterguard, and the 
natural level of the country. 
His Grace also ordered that the rubbish should be cleared away, both from 
the front and rear of the breach. This was accordingly done, when the wall 
was found to be 5 ft. in perpendicular height in front, with a rounding of 
rubbish of about 2J or 3 ft. on the top ; and to be about 8J or 9 ft. in height 
towards the rear, or chemin de ronde as will be clearly shown by fig. 5. 
Front view of the wall when the rubbish was cleared away from the breach after the second 
day’s fire. 
4. On the 11th of August the batteries recommenced their fire from 
eight 68-pr. carronades 500 yds., and six 10-in. iron howitzers 400 yds., 
when eighty-five rounds from each of the howitzers, and one hundred 
from each of the carronades were fired in 3^ hours, by which time the 
wall and buttresses were one mass of ruin, and the chemin de ronde was 
obliterated, as is more clearly shown in figs. 3 and 4. 
Side view of the wall after the third day’s fire. 
