This treatise reviews in a concise and well presented manner the material at Radiumhemmet, the literature and a historical sketch of the present knowledge concerning malignant tumors of muscle and fascial sheaths as well as those of joint capsules, tendon sheaths and serous bursae. The author has clearly demonstrated the inadequacies of a histologic classification of such tumors and has emphasized that in spite of existing hiatuses in the knowledge, a histogenetic classification together with topographic considerations lends itself to greater accuracy in foretelling the behavior of a given tumor, in selecting the most appropriate type of therapy and in establishing an intelligent prognosis. Dr. Jönsson's historical sketches do much to elucidate the existing chaos of nomenclature. Excellent series of case histories supplemented by numerous photomicrographs illustrate the various types of tumor.
The analysis of the material at Radiumhemmet, though not extensive enough for statistical study, is of interest. This