Services of party in New Holland—Start for the 315 interior—Labours of the expedition; corporal Auger—Captain Grey and corporal Coles expect an attack—Attitude of private Auger at the camp against the menace of the natives—Captain Grey and Coles attacked; their critical situation: the chief wounded; devotion of Coles—Usefulness of Auger—Renew the march; Auger finds a singular ford—Discovers a cave with a sculptured face in it—Mustard traces the spoor of a quadruped still unseen in New Holland—A sleep in the trees—Trials of the party—Primitive washing—Auger the van of the adventurers—Humane attention of the Captain to Mustard; reach Hanover Bay; arrive at the Mauritius—Detachment in Spain—Attack on Orio—Usurvil; Oyarzun—Miscellaneous employments of the party—Reinforcement to it; Casa Aquirre—Orio—Secret mission to Muñagorri—Second visit to the same chief—Notice of corporal John Down—Bidassoa—Triangulation of north of Scotland—Also of the Frith of the Clyde—Insurrection in Canada; guard of honour to Lord Durham—Company inspected by the Governor-General on the plains of Abraham—Inspection at Niagara by Sir George Arthur—Services and movements of the company in Canada; attack at Beauharnois—Submarine demolition of wrecks near Gravesend—Expedient to prevent accidents by vessels fouling the diving-bell lighter—Conduct of the sappers in the operations; exertions of sergeant-major Jones—Fatal accident to a diver—Intrepidity of sergeants Ross and Young—Blasting the bow of the brig ‘William,’ by sergeant-major Jones—Withdrawal of the sappers from the canal at Hythe 1839.