Edwin O. Reischauer, University Professor, will not teach this semester because he is recuperating from severe internal bleeding that forced his hospitalization late last month.

Reischauer, who is recovering at home after the week-long hospital stay, said yesterday that although he is "coming along just fine," his doctors recommended that he rest this summer. He added that they have not yet determined the cause of the bleeding.

The 69-year-old East Asian scholar said he thought the bleeding may have been caused in part by a 1964 stab wound that damaged his liver while he was ambassador to Japan. Reischauer also has an ulcer--which he ruled out as a probable source of the recent bleeding--and he suffered a mild stroke five years ago.

"I'm a lot better, but I have to be careful," Reischauer said, adding that he hopes to return to his teaching duties next semester.

Reischauer was scheduled to give lectures in Historical Study A-13, "Tradition and Transformation in East Asian Civilization: China," to teach Government 118, "Government and Politics of Modern Japan," and to co-teach History 2851, a seminar on Japanese History.

Philip A. Kuhn, professor of History and of Each Asian Languages and Civilizations--who teaches Historical Study A-13 with Benjamin I. Schwartz, Williams Professor of History and Political Science--yesterday called Reischauer "an irreplaceable person." But he added that he and Schwartz would deliver Reischauer's usual four or five lectures in the Core course.

"He's an extremely effective lecturer," Kuhn said of Reischauer. "It's going to be tough, but we'll do our best to give students their money's worth," he added.

The Government Department will move Government 118 to the spring semester, Reischauer said, adding that even if he does not return, Kent E. Calder, lecturer on Government, and Terry E. MacDougall, associate professor of Government, will offer the course.

Albert M. Craig, professor of Japanese History, said yesterday he and Donald H. Shively, chairman of the Department of East Asian Languages and Civilizations, will teach the Japanese History seminar. "He (Reischauer) will be missed this semester, but everyone is carrying on," Craig added.

One of Reischauer's long-time colleagues, Ezra F. Vogel, professor of Sociology and chairman of the Committee on East Asian Studies, said yesterday, "Reischauer is such a super teacher that anything he can't be in on is a loss to everybody, but we'll keep the bases covered as best we can."