As a basis for the discussion of so intricate a subject, I will first endeavor to establish the underlying principles of good architecture, using the word style in its broadest sense, expressive of elegance, fitness, and artistic truth,--style proper and style as defined by the antiquarian being two distinct things. It has been argued, and with some show of reason, that the origin of all beauty is in utility; but in architecture, which has other objects besides the gratification of the eye, or even of the understanding, it must be conceded that art holds the second place. Two thousand years ago, Vitruvius laid down the basis of good architecture: First, order, method, and regularity; second, fitness of arrangement, general disposition, and contrivances adapted to locality and other circumstances; third, uniformity; fourth, proportion,--being the relation of parts or quantities by which harmony and grace are obtained; fifth, character,--which dictates the special aspect of the work according to its purpose; sixth, analogy,--consisting in those resemblances and ideal significances which assimilate the works of man to those of nature; seventh, economy,--not merely the vulgar economy of the purse, but that which combines utility with beauty, admitting nothing superfluous and allowing nothing to be overlooked. Sir Henry Wotton tells us, in the quaint old English of his day, that in architecture, as in all operative arts, "the end is to build well." Other writers have alluded to architecture as the "politeness of building," and as "the art of building with expression." The fundamental law which should govern the preparation of an architectural design is thus happily expressed by Roscoe: "Utility and beauty are bound together in an indissoluble chain; and what the great Author of nature has joined together let no man put asunder." Will the "Free Classic" of the Queen Anne reformers bear the test of a critical comparison with the "seven lamps" of Vitruvius or the dictum of Roscoe? are such designs true exponents of "high art," and do they meet the requirements of the complex and artificial life of to-day? I propose to confine my investigations to the style of domestic buildings, ecclesiastical and municipal edifices being usually and by general consent designed in a broader and more masculine manner, their _motifs_ being deduced from mediaeval sources or from the rich and dignified Renaissance of Continental Europe.