The informal meeting of medical members on Friday, December 14, was most interesting, as these meetings usually are.A first set of pathological specimens, representing diseases of bone, along with the respective skiagraphs, were exhibited, and this effort to set the teaching of radiological diagnosis upon a broader and more scientific basis was much appreciated.Dr. Finzi showed an abnormal cone-shaped diaphragm, Dr. Rowden explained a simple method of pelvimetry, Dr. Barclay described a cassette for serial radiography, and several other films were exhibited and discussed.