Bethesda Hospital, Anbur, DDL. HAs District, of age and each sample must weigh a minimum of 100 grams. I believe my letter of April 28, 1955 gives you the other necessary information and if any further questions remain please feel free to contact me. Thank you again for the concerted effort you have made to assist us. Sincerely yours, J- Lo Kulp Assoclate Professor JLKsps.