But London supplies _other_ facilities for the study of Mediæval art in addition to its ancient buildings. In the first place, I may mention its libraries, in which the student may devote his spare hours in studying every work which has ever been published bearing upon the subject. The library of the British Museum (including the print-room and the manuscript-room) contains everything of that kind which the student could desire, and I strongly recommend you to gain the privilege of admittance and to make full use of that privilege. Your own library, too, at the Royal Academy, and those of the Institute of British Architects and of the Department of Art at South Kensington, offer every facility for study. I would especially mention that last named as being open in the evenings, and as being one of the most complete libraries of works on art in existence. The Architectural Museum[77] and the South Kensington Museum are absolutely invaluable as aids to the student; so that you have ample employment for the dead season of the year in which sketching tours are impossible, and it is your own fault if you do not make full and ample use of the privileges you possess; for, believe me, they are such as in former times it was impossible to obtain. I need hardly mention the British Museum, which, though not rich in Mediæval works, is the repository of those wondrous stores of Greek and other art which the Mediæval artist knows as well how to value as those who devote to them their more exclusive study. You will perhaps wonder that I have said nothing as yet of _foreign_ travel. I have delayed this intentionally, and for this reason: the facilities for travelling abroad are now so abundant, and so great a stress has of late years been laid on the study of foreign examples, that there is great danger of the student rushing headlong into foreign travel before he has made himself acquainted, in any but the most superficial manner, with the architecture of his own country. You may possibly be disposed, after reading my former lectures, to say that, as most of the developments of our art seem to have originated abroad, it would be more systematic to study them in the first instance where they originated, and then to trace their ramifications in other countries. I would reply that, though when _writing_ on a subject one is obliged to be systematic, it is by no means necessary that we should be rigorously so in our studies. Effects have in all sciences to be examined into before their causes are discovered, and it is often better that each student should for himself go through the process of tracing back familiar developments of art through the long course of circumstances which led to them, rather than, beginning at the original germ (which he must learn from others), to proceed--in a course not his own--till he arrives at the result with which he is familiar from its being at his own door.