PT - JOURNAL ARTICLE ED - , TI - SCIENCE NEWS AID - 10.1126/science.60.1550.0x DP - 1924 Sep 12 TA - Science PG - x--xiv VI - 60 IP - 1550 4099 - http://science.sciencemag.org/content/60/1550/x.short 4100 - http://science.sciencemag.org/content/60/1550/x.full SO - Science1924 Sep 12; 60