He settled in Saint John, New Brunswick where he was appointed deputy land surveyor in 1822. After he surveyed the upper Saint John River for the feasibility of steamshipping, he became involved with the buildings of several early steamboats and the first Saint John harbour ferry. Foulis founded the province"s first iron foundry in 1825 and a school of arts in 1838.
He couldn"t hear any of the notes except for very low ones.
He thought that could fix all the problems that were causing ships to crash in the fog. Due to business ventures of varying success and his failure at patenting his foghorn, Foulis died in poverty.