First published in 1909 Tectonic Art is a fascinating exploration of the Masonic symbolism and its relation to stone masonry. Written by the brother responsible for preserving the Ancient Operative Rituals, this work will be of particular interest to the members of The Worshipful Society of Free Masons, Rough Masons, Wallers, Slaters, Paviors, Plaisterers and Bricklayers. Offering new insights into well-known Masonic emblems this work also teaches how the degrees of pure and ancient Masonry contains practical trade secrets handed down from the guilds to the modern day. For anyone wondering why the apron of the Installed Master appears to have levels, or who would like to consider why the square is mastered before the arch, this book will be an inspiring read.