Departmental buildings then in course of erection. Interests of considerable magnitude were then at stake between the government and the contractors, claims amounting to nearly half a million of money having to be adjusted. In connection with his employment by the government, Mr. Baillairgé found that to continue his services he must be a party to some sacrifice of principle, which, rather than consent to, he was indiscreet enough to tell the authorities of the time. This excess of virtue was too moral for the appointing power and more than it was disposed to brook in an employé of the government. The difficulty was, therefore, got over by giving Mr. Baillairgé his _feuille de route_, a compliment to his integrity of which he has ever since been justly proud. He shortly afterwards returned to Quebec. During his professional career, Mr. Baillairgé designed and erected numerous private residences in and around Quebec, as well as many public buildings, including the Asylum and the Church of the Sisters of Charity, the Laval University building, the new Gaol, Music Hall, several churches, both in the city and in the adjoining parishes—that of Ste. Marie, Beauce, being much admired on account of the beauty and regularity of its interior. The “Monument des Braves de 1760” was erected in 1860, on the Ste. Foye road, after a design by him and under his superintendence. The government, the clergy and others have often availed themselves of his services in arbitration on knotty questions of technology, disputed boundaries, builders’ claims, surveys and reports on various subjects. In 1872, Mr. Baillairgé suggested, and in 1878 designed and carried out what is now known as the Dufferin Terrace, Quebec, a structure some 1,500 feet in length, overlooking the St. Lawrence from a height of 182 feet, and built along the face of the cliff under the Citadel. This terrace was inaugurated in 1878 by their Excellencies the Marquis of Lorne and H.R.H. the Princess Louise, who pronounced it a splendid achievement. In 1873 Mr. Baillairgé designed and built the aqueduct bridge over the St. Charles river, the peculiarity about which is that the structure forms an arch as does the aqueduct pipe it encloses, whereby, in case of the destruction of the surrounding wood-work by fire, the pipe being self-supporting, the city may not be deprived of water while re-constructing the frost-protecting tunnel enclosure. At the age of seventeen the subject of our sketch built a double cylindered steam carriage for traffic on ordinary roads. From 1848 to 1865 he delivered a series of lectures, in the old Parliament buildings and elsewhere, on astronomy, light, steam and the steam engine, pneumatics, acoustics, geometry, the atmosphere, and other kindred subjects, under the patronage of the Canadian and other institutes; and in 1872, in the rooms of the Literary and Historical Society, Quebec, under the auspices of that institution, he delivered an exhaustive lecture on geometry,