Miss CroughTo lieIf1tToW. R. Mason Jr.Miss Ruthann E. Croughwellof 10 Lake St., daughter of Mr. and Mrs. Edward J. Croughwell of Dalton, will be married this morning at 11 to William R. Mason Jr., son of Mr. and Mrs. Mason of 4 Taconic Island.The Rev. Thomas .T. O'Connor will perform the ceremony at St. Joseph’s Church, and a reception will follow at the Hinsdale Country Club.The bride will be escorted bythe bridegroom's uncle, JosephB. Powers. She will wear a peau de soie gown with scoop neckline, tapered sleeves and bell-shaped skirt. Her shoulder-length veil will be attached to a tiara of net. She will carry'white and red roses withstreamers on a prayer book.Attendants NamedThe couple will be attended by the bridegroom's uncle and aunt, Mr. and Mrs. Richard D. Powers. Mrs. Powers will be dressed in an emerald green velvet gown and white fur pillbox. She will carry gold pompons with gold streamers.The bride attended Dalton and W ahconah Regional high schools.Mr. Mason, a 1962 graduate of Pittsfield High School, is employed at Texaco, Inc. He has been in the Army Reserve for22 four years.