Gossypii Cortex, Cotton Root Bark. This is a powerful emmenagogue and abortifacient in large doses. In smaller doses it is of value to control hemorrhages of uterine fibroids and incipient cancer. Most of the fluidextract of cotton root bark upon the market is nearly inert. Only the fresh or very recent bark is active. In consequence, the green fluidextract or ec. tr. should be used in doses of from 5 to 20 I.