BRABY, L. A., NELSON, J. M., AND ROESCH, W. C. Comparison of Repair Rates Determined by Split-Dose and Dose-Rate Methods. Radiat. Res. 82, 211-214 (1980). Both split-dose and dose-rate techniques have been used to investigate sublethal damage repair in Chlamydomonas reinhardi irradiated with fast electrons. Repair rates, measured by these two methods, were found to depend on temperature over the range 7.5 to 32.50C. However, no significant differences were found between values determined by the two methods.