United States Navy Medical News Letter Vol. 29 No. 7, 5 April 1957Historical Fund of the Navy Medical Department .... 2Biological Warfare Medical Defense - Part I ... 3Pain of Coronary Heart Disease ..... 7Drug Addition . . . . . . . . . . . . . . . . . . . . 10Essential Hyperlipemia ........................................... 12Herpes Zoster . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 14Pulseless Disease ................................................ 15Tinea Capitis by Galloway, C. B., Soliman, A. A. ......... . . . . . . . . . . . . . . 16Dental Research . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 18From the Note Book .............................................. 23DENTAL SECTIONDOD Committee Visits Naval Dental School ....25Correspondence Course on Dental Administration ..... 25''Legion of Merit'' ................................................. 26Dental Interns for Fiscal Year 1958 ........ 26BuMed Notice 1520 ............................................... 27RESERVE SECTIONCourses Administered by Bureau of Naval Personnel ....... 27Hospital Corps Division in Twelfth Naval District ...... 29Reserve Dental Company Activated ..... 29PREVENTIVE MEDICINE SECTIONImportance of Chest X-Rays in Total Radiation Exposure ...... 30Practical Aspects of a Hearing Conservation Program ....... 33Tetryl Occupational Diseases - Investigations and Prevention ....... 36Ventilation of Operating Theatres ....37Hospital Infection . . . . . . . . . . . . . . . . . . 39Alumni Meeting at Brooklyn Navy Yard ....... 39