31.   He suffered a brief illness, the Hannemann Funeral Home in Nyack reported.

32.   He suffered a brief illness , said Mort Lawrence, a family friend.

33.   He suffered a brief illness, according to the State University of New York at Buffalo, where he was distinguished professor emeritus of psychology.

34.   He suffered a brief illness, his family said.

35.   He suffered a brief illness, said Bowdoin College in Brunswick, where he was a trustee emeritus and a former board chairman.

36.   He suffered a brief illness, said his friend and colleague John P. Anderson Jr.

37.   He suffered a brief illness, said his son, James.

38.   He suffered a brief illness, according to the Dryden Flight Research Center in Edwards, Calif., which he served as its founding director.

39.   He suffered a brief illness, said Prof. Archibald Howie, a successor to Mott as head of the Cavendish Laboratory of Cambridge University.

40.   He suffered a brief illness, said Nick Kaledin, a friend in New York.