Thus it is that in these relics of the past may frequently be traced artistic impulses destined to find no other embodiment than the form in which they are presented to us in the pages of a manuscript. The copiousness, then, of such documentary illustrations of the invention of remote periods is one of the most valuable features of the teaching they should convey to us. No revival nowadays of any historical style by the architect can be satisfactory which is not based upon a knowledge, not of the purely architectural features of the period alone, but of the condition and characteristics of all those decorative details which distinguished it as a living reality from the effete and denuded relic which may now only present itself for our information. Thus even the Saxon and Romanesque styles of architecture may, through the architect's careful attention to the decorative features exhibited to us in the pages of ancient illuminated books, be revived, not in their rude and structural nudity, but as glowing with those colours, and decorated with those forms, which we may observe as peculiarly affected in the ornamental and pictorial embellishments of the best artists of the days when those styles were the only ones popularly adopted. And not only are the beautiful ornaments and decorative features of illuminated manuscripts valuable as supplying us with correct information as to the system of embellishment regarded by the best artists of each period as harmonizing most perfectly with the structural styles prevalent in their days; but in the measure of their permanent beauty they are no less valuable to us as indications of what is excellent for all time. Thus, then, they may be used, either as enabling us to restore the most brilliant features of the historic styles with an accuracy to be acquired from no other sources of information, or they may be regarded as providing us with materials for that more extended system of eclectic selection which must afford the only basis of perfection and originality in any styles which we may desire now or hereafter to originate; and the origination and perfection of which we may desire to bequeath to succeeding generations, as testimonies that, in the nineteenth century, there lived men as capable of the creation of beauty as any whose happiest inventions are to be found in the pages of these ancient and most precious volumes.