Shiramine is an isolated mountain village located in Ishikawa prefecture. The study was done to find the relationship of the geographical distribution of marriage on traffic development and other factors. The results were as follows. 1) The rates of marriages between the same villagers about 80% showed little change from 1868 to 1925. After 1926 they decreased slowly, and after 1955 they markedly decreased. 2) The spread of the geographical distribution of marriages took about thirty years after traffic development. And it was almost in parallel with the spread of newspapers and telephones from 1955 to 1965. 3) In Kuwajima district of Shiramine village there is a high rate of marriage between the same villagers, while in Shiramine distrct there is a low rate of marriage between the same villagers. It meant that Shiramine and Kuwajima district people did not marry with each other. But after 1955 when marriages between the same villagers decreased, marriages between the same district residents also decreased rapidly after 1971. The two district people then began to marry with each other after 1971. 4) The geographical distribution of marriage of old traditional well established families expanded earlier than the poor working class.
