by John Marshall, Royal Naval Biography — Brisbane… (1823)
“ The only way the citadel could be approached with cannon being a narrow neck of land, and which is composed principally of loose gravel thrown up by the sea, the difficulties in erecting our batteries had been very great; but the ardour and energies of the soldiers and sailors, animated in every danger and every fatigue by the continual presence of General Oswald, rose in proportion as the obstacles presented themselves. Captains Brisbane and Griffiths, with the masters of their ships, took great pains to sound about the citadel ”
