1977 年 252 巻 p. 129-135
The Ostian archaeological materials (ruins) which has similality to the Roman houses, clarify they had a multiplicity in an unit's type as an architectural quality and style in one building structure of insula, even otherhand they had an equally qualifyed insula to domus and a convined insula with domus. The specific character of insula is the residents who coming from each different social classes lived together in one building structure with each different living unit's quality, and we could fined many examples of the livingstyle as mentioned above on that of Florence and many other Italian cities, then this might be presumed as the specific character of the Europian Latin cities after the Roman era and Originally based on the Roman insula.