Although so many books have been written upon Architecture and the Art of Building, calculated to assist the experienced practitioner, there are few, if any, that profess to assist the student in the acqui sitiou of elementary knowledge. This important omission is supplied by this volume; and it will be found, we hope, a desirable assistant to every young man who has devoted himself to any engagement connected with these interesting pursuits. If the reader desires to become a workman, he will find, in these pages, facts that will aid his progress, and convey in a few hours the information that has been collected with great labour by studious men in a long series of years; if he intends to be a surveyor of work, he will here find the elements of his art. The architectural student will need both these branches of knowledge; but to assist him still more, we have added an outline of the history of his profession. To whatever branch of the art of building the reader.