Return of the detachment from Spain—Its conduct during the 354 war—Survey of the northern counties of England—Notice of sergeant Cottingham—Secondary triangulation of the north of Scotland—Increase to survey allowances—Augmentation to the survey companies—Renewal of survey of the disputed boundary in the state of Maine—Corporal Hearnden at Sandhurst—Wreck of the ‘Royal George;’ duties of the sappers in its removal—Exertions of sergeant-major Jones—The divers—An accident—Usefulness of the detachment engaged in the work—Boat adventure at Spithead—Andrew Anderson—Thomas P. Cook—Transfer of detachment from the Mauritius to the Cape—Survey of La Caille’s arc of meridian there—Detachment to Syria—Its active services, including capture of Acre—Reinforcement to Syria 1841. Syria—Landing at Caiffa; Mount Carmel—Cave of Elijah; 365 epidemic—Colour-sergeant Black—Inspection at Beirout by the Seraskier; return of the detachment to England—Expedition to the Niger—Model farm—Gori—Fever sets in; return of the expedition—Services of the sappers attached to it—Corporal Edmonds and the elephant—and the Princess—Staff-sergeant’s undress—Staff appointments—Wreck of the 'Royal George'—Sergeant March—Sapper-divers—Curiosities—Under-water pay; means used to aid the divers—Speaking under water—Gallantry of private Skelton—Alarming accidents—Constitutional unfitness for diving—Boundary survey in the state of Maine—Augmentation to corps for Bermuda—Sandhurst; corporal Carlin’s services—Quartermaster-sergeant Fraser—Intrepidity of private Entwistle—Colonel Pasley—Efficiency of the corps—Its conduct, and impolicy of reducing its establishment—Sir John Jones’s opinion of the sappers—And also the Rev. G. R. Gleig’s 1842.