United States Navy Medical News Letter Vol. 29 No. 4, 15 February 1957Radiation Exposure Aboard USS NAUTILUS by LCDR John H. Ebersole, MC USN . ... 2Friedlander's Bacillus Pneumonia . .. . . . . . . . . . . . . . . 9Pregnancy During Hodgkin's Disease ... 10Surgical Excision of Psoas Abscesses ... 13Vascular Prostheses.. . ....... . . 15Articular Surface of Glenoid Fossa .. . 17Training in Diving and Submarine Medicine, Applications for... 18Trudeau School of Tuberculosis at Saranac Lake...................... 19Standardized Drugs Now Available ...19From the Note Book ............................................. .20DENTAL SECTIONDental Officers Visit Caribbean Area ...22Active Duty for Inactive Reserve Dental Officers... 22Correspondence Training Section - Naval Dental School ... 23MEDICAL RESERVE SECTIONCorrespondence Courses Available to Reserve MD Personnel.......... 24References Important to the Reservist ... 25AVIATION MEDICINE SECTIONMedical Department Manual Change Relating to Aircrew Fatalities ... 26The Human Component in Extraterrestrial Flights with Bibliography by Major Robert K. Quinnell, USAF (MC)  ... 27