As has been stated, the type A is especially characteristic of the Chinese, but some influence of it may be observed over the Koreans. The influence of this type' over the Chinese of Manchuria is enfeebled by the presence of the type B and others. That is quite natural, because the Chinese of Manchuria during a long time were only a Chinese colony surrounded by a local population very distinct from the Chinese themselves. In fact the active colonization of Manchuria by the Chinese dates only from the XVIII century, though the Southern section of Manchuria and especially the lands around the Pechihli Gulf and Liaotung Peninsula were populated by the Chinese since the Han Dynasty. The Chinese movement eastward and northward was opposed by the local populations and this country was controlled from time to time by different leading ethnical groups.
At the moments of the growing influence of some of these groups they conquered their neighbours. During the change of dynasties and leading ethnical groups the Chinese advanced into the country but they were also pushed out when the leading groups were taking the power. During this long period the Chinese spread their influence many times over the Koreans and other ethnical groups of this area. Successful wars alternate with military defeat. In this way the influence of the Manchus and Koreans over the Chinese was always very effective and finally on this territory was formed an amalgamated population. Of course, this was not a military conquest, but generally the peaceful intrusion of the Chinese amongst the local tribes and of the non-Chinese groups among the Chinese. Phenomena of this kind can be observed not only in this territory but also in Siberia. There, for example in Transbaikalia, the amalgamation of the Russian colonists with the local population is so stable that the early Russian population, namely the Cossacks of Transbaikal, now have features more «Asiatic» than «European.» Besides, some Mongols and Tungus are now incorporated into the Cossack military organization and have appropriated the Russian tongue. Something like that might take place in Manchuria.
Thus the spreading of the type A might be now observed within the limits of China Proper, Manchuria, where it is of secondary importance, and Korea, where it is not more than incidental. Theoretically it might be supposed that it is spreading in Mongolia too.