In the July issue of The Journal in the article Experimental Immobilization and Remobilization of Rat Knee Joints by E. Burke Evans, G. W. N. Eggers, James K. Bulter, and Johanna Blumel, the legend for Figure 14, page 740, states that the period of immobilization was eleven days. This is not correct. The period of immobilization was 110 days.