PT - JOURNAL ARTICLE ED - , TI - ITEMS AID - 10.1126/science.61.1585.xiv-s DP - 1925 May 15 TA - Science PG - xiv--xiv VI - 61 IP - 1585 4099 - http://science.sciencemag.org/content/61/1585/xiv.2.short 4100 - http://science.sciencemag.org/content/61/1585/xiv.2.full SO - Science1925 May 15; 61