KW: cyanide and non-respiring yeast; ancient anticipation of Ephrussi's petites-colonies; Ogston; cf reviw: The petite mutation in yeasts: 50 years on Chen XJ, Clark-Walker GD INTERNATIONAL REVIEW OF CYTOLOGY - A SURVEY OF CELL BIOLOGY, 194: 197-238 2000; cf Desmond-Walker Correspondence; jl 12/17/99