THIS compact and well-produced volume on the growingly popular subject of the art of building is the work of no less an authority than the late Sir Thomas Jackson, Bart., R.A. The manuscript, fortunately, was completed before his death, and this posthumous book is the last from his facile pen. It is stated in the preface that “it is hoped that the book may act as an incentive” to the reading of his greater works, “Byzantine and Romanesque Architecture,” “Gothic Architecture,” and “The Renaissance of Roman Architecture.” Architecture. By Sir Thomas Graham Jackson. Pp. xi + 366 + 111 plates. (London: Macmillan and Co., Ltd., 1925.) 25s. net.