PHILIP N. BRIDGES, 92, a code-breaker for the National Security Agency and its predecessor agencies for 30 years, died Dec. 7, 2007. He was a member of Delta Upsilon and received his degree with honors and with distinction in biology. Elected to Sigma Xi and to Phi Beta Kappa, he received a master’s degree from Columbia University. Prior to his recruitment by the U.S. Navy as a civilian cryptanalyst during World War II, he worked on a Carnegie Foundation grant to complete his late father’s work: mapping the chromosome of the common fruit fly, Drosophila melanogaster; these findings were later published. After his retirement as a cryptanalyst, he started a printing business focused on scholarly quarterlies. Predeceased by his wife, Marjorie Lismer Bridges, and his brother, Nathan Bridges ’43, survivors include three daughters, a granddaughter, and a sister.