Size frequency distributions of the cross sections of orange and black glass beads in the 125--250 μm fraction of soil 74220 have been determined. Cross section medians of black vitrophyric and orange glassy beads in the 125--250 μm fraction are 0.16 mm, respectively. The vitrophyric beads contain skeletal olivine crystals mantled by ilmenite. Some beads contain fragmens and euhedral crystals of endogeneous olivine. ''Free-flight'' cooling rates and the critical cooling rate for crystallization have been determined with a synthetic melt of orange glass composition. The critical cooling rate is approximately 100¿ C/s. The ''free-flight'' cooling rate of droplets 0.16 mm in diameter is approximately 1080¿ C/s. It is inferred that Apollo 17 orange melt droplets were erupted together with a large mass of hot gas and/or formed a dense cloud of heat-radiating droplets. ¿ American Geophysical Union 1987