Summing up the above, one cannot entirely isolate a country from its surroundings, in order to see what a country or a nation would be able to achieve, if untouched by any outward influence, that is to say, solely out of its own immanent evolving forces. Next, it is none the less difficult to observe scientifically the effects of some outward forces acting on a nation, by warding off the influx of subsequent influences and thus giving to the forces in question the full scope and time to exert their influence. It often happens, however, that what cannot be done artificially may be found produced spontaneously, and though we cannot make experiments, in the strict sense of the word, while observing historical data, it is possible that the history of a nation or of an age may be taken as a case or a phase of an experiment, if such an experiment could ever be tried at all. And indeed the history of Japan may be considered as one of a few such happy cases. Here I need not talk much about the history of our country anterior to the introduction of the Chinese civilisation. After the opening of the regular intercourse between this country and China in the beginning of the seventh century, institutions, arts, learning, and even the manners of every day life continued for a long time to be brought thence by many official emissaries and students, and copied faithfully here, though generally with slight modifications. At that time, however, there being no country far advanced in civilisation other than China near us, the Chinese influence, the only exotic one, was allowed to take sole and full effect. Besides this, that Chinese civilisation itself was not encouraged to flow in endlessly. When, with the decay of the T'ang dynasty and the setting in of the anarchical condition following it in China, the highly finished culture attained during that dynasty, perhaps the most perfect one China had ever seen, began to degenerate there, the official intercourse between that country and Japan was interrupted. Of course, I do not mean to say that even private and intermittent commercial intercourse was also suspended at the same time, for the geographical position of our country toward China does not allow the former to remain entirely isolated from the latter. The suspension of the regular intercourse itself, however, was enough to save Japan from becoming entangled in the vicissitudes of the various dynasties following the T'ang, and our forefathers were left to themselves to make the best use of, that is to say, to digest, what had already been brought in abundantly. In the succeeding period the quiet process of rumination went on for several centuries. If we look back into the Japanese history of that time, therefore, we can ascertain fairly scientifically the effect of a high civilisation acting on a naive population not yet sufficiently organised as a nation, as our country was at that period, and likewise we can observe many traits of the old