(1915) This work describes and analyzes several cases of pathological behavior. The interest comes not only from the cases themselves, but also from the of-its-time analysis which is mired in what we now know to be wrong thinking about mental illness, sexuality, gender, and race.  The Healys were the first to concentrate almost exclusively on juvenile cases, and explore and analyze their causes and antecedents, using a mixture of qualitative and quantitative methods.