IT is impossible to think of any operation or procedure which is as 1commonly resorted to for the correction of any and all defects or complaints as is a tonsillectomy. Our search through available literature on the subject reveals an abundance of material and an almost universal opinion that good results, both curative and preventive, are to be expected.Kaiser, of Rochester, N. Y., has done a very thorough and gratifying piece of work with convincing conclusions.Besides verifying the figures and results obtained by Kaiser, Barrett, Robey, Mann and others, we have drawn some conclusions as to:1. The age group which shows the greatest improvements and the complaints, if any, which can be relieved to the greatest degree in the respective age groups.2. The length of time after operation before improvement is evidenced and the symptoms showing the earliest tendency toward improvement.3. The effect on the school progress of those being physically handicapped. 4. The effect on children with subnormal mentality or those who are mentally retarded and lack application and alertness.5. The effect of tonsillectomies on .the progress of children having coexisting conditions related and not related to diseased tonsils.It has been suggested by Brokay and others that the parents should be consulted as to the child's condition following the operation. In our study the parents' opinions were obtained in each case. We believe that information secured through the parents' daily observation is likely to be more dependable than that which might be secured from any other single source; however, the teachers' observations were not overlooked. We were also mindful of the fact that this information should be supplemented by physical examinations before and after operation.This study was based on cases operated on by private physicians