A THEORETICAL CONSIDERATION OF THE ACTION OF X-RAYS ON THE PROTOZOAN COLPIDIUM COLPODA

摘要

1. The theory which Crowther has advanced to account for the variation of the lethal dose of roentgen rays among the individuals of a group of Colpidium colpoda is reviewed.2. It is shown that the use of his small-body theory to explain the small value of λ e leads to certain further assumptions about the nature of the destructive effect.3. An alternative hypothesis is discussed.