Primitive huts, William Chambers, from William Chambers, Treatise on Civil Architecture (London, 1759), pl opposite p 1, collection Canadian Centre for Architecture, Montréal		Primitive hut allegorical frontispiece, France, Marc-Antoine Laugier, 1755, from Marc-Antoine Laugier, Essai sur l' architecture, 2nd ed (Paris, 1755), frontispiece, collection Canadian Centre for Architecture, Montréal