A delegate at the tenth National Conference on Higher Education yesterday attacked President A. Whitney Griswold of Yale for his opposition to an increase in college enrollment. He also attacked Princeton and Harvard admission polices.

Commenting at the Chicago panel on statements from Yale and Princeton which asserted their no-expansion policies, Francis H. Horn, president of the Pratt Institute, said: "This is sheer nonsense unless you admit that Yale or Princeton already has a diluted form of education . . . I think they still have a highly selective group."

Horn also attacked as undemocratic the position of James B. Conant '14, President emeritus, on the selection of students for higher education. According to Horn, Conant once proposed that only about the top 25 percent in intellectual capacity be admitted to the traditional college.

Horn's criticism, however, centered around Griswold, whom he quoted as saying that "Yale is not interested in beetle-browed, highly specialized intellectuals, but in well rounded persons." Horn said that Griswold's opinion was anti-intellectual.