Microcosms containing leaf litter, sand, and three, six, or nine millipedes were incubated for 14 weeks at either 5°, 15°, or 25°C under three rates of simulated rainfall. Effects of temperature, rate of leaching, and millipede density on transfer of(137)Cs, K, Mg, and mass and on evolution of CO2were analyzed statistically and by analog computer simulation. Loss rates from litter increased in the order: Mg