MEMORANDUM FOR RELEASE TO THE D.C. MEDICAL SOCIETY FOR PUBLICATION 
IN THE MEDICAL ANNALS IN THEIR PERSONAL NOTES COLUMN 
"Dr. Roy Lyman Sexton recently completed a two and a half 
month scientific mission in Central Africa, including the Belgian 
Congo, TJranda Urundi, Uganda, Tanganyiki, Sudan and Egypt as med- 
ical officer for the U. S . Smit hsonian-Bredin Expedition. This 
mission was for the purpose of studying species identification of 
mites and their distribution on plants and small animals* Speci- 
mens of soil were collected for antibiotic assay. A photographic 
record was kept of the trip, which will be filed in the Archives 
of the museum. Of personal interest to Dr. Sexton was a practi- 
cal field try-out of methods of water purification and of preven- 
tive measures of tropical diseases which were used on the members 
of the party. The palatability of new water purifiers and diet- 
ary routines on such a trip were tested. A detailed report of 
this trip w r ill not be completed for some time. It will be released 
from the Smithsonian Institution. 
"The party left Washington on April 9, 1955, going straight 
to Leopoldville. From there the trip was made by car, plane, and 
boat jlmr , Cairo by following the navigable waters of the Nile 
to that city. ^ UVv , 
"Dr. Sexton’s son, Roy Lyman Jr., chief of medical photogra- 
phy at Walter Reed Hospital, was staff photographer on the expedi- 
tion. The return was direct from Cairo on June 1°, 1955." 
RLS : psw 
