The human mind has found expession more ingeneously in the Art of building than in any other artefact. The primitive man, living in jungles, hills and dales was confronted with the problem of protecting himself against heat, cold, rain and other inclemencies of nature, as well as from his felow denizens, the wild animals. He concieved and contrived to build some sort of shelter with materials readily available at hand, such as timber, bamboo, leaves of tress, grass etc. and began to live in it. Similarly the early ethnological man, roarning in the rocks and mounds, cut out hollows and caves in them and improvised them as their habitation. In the progress of time, the potential human faculty is developed marvellously and a corresponding overall change in the art of building in its shape, size, magnitude and decoration has been effected as we visualise around us. It is to be remembered in this connection that this art of building has undergone multiple phases of invention, evolution, experiment and development, through hundreds of centuries and ages before it has assumed the present forms and stages as we see now.