SUMMARY.In a controlled experiment using 86 pairs of male white mice matched for weight, the blood alcohol level after intraperitoneal injection of ethyl alcohol was slightly but significantly elevated in animals in which a dosed fracture of the femur was produced at the time of the alcohol injection. Significant elevation of blood alcohol was present at half an hour after alcohol injection and was still present three hours after injection. Blood alcohol levels in both injured and control animals decreased linearly at the same rate with the logarithm of time, but the regression lint-of the blood alcohol levels of the injured animals was higher than that of the control animals.