E. A. Wendlandt is a native of San Antonio, 

 Texas. He attended public schools in Austin, 

 Texas. After receiving a B.A. degree in geol- 

 ogy from the University of Texas in 1924, he 

 was employed by Humble Oil and Refining 

 Company as a field geologist and later became 

 Assistant Division Geologist for the East Texas 

 area in 1934, and Division Geologist in 1941. 

 In 1950, he was transferred to Houston, Texas, 

 as Assistant Chief Geologist, and has served 

 as Chief Geologist for the Humble Company 

 since 1955. Mr. Wendlandt is a member of 

 the American Association of Petroleum Geol- 

 ogists, American Geological Institute, Ameri- 

 can Geophysical Union, American Petroleum 

 Institute, Houston Geological Society, a life member of the East Texas Geological 

 Society, and a fellow in the Geological Society of America, and the Texas 

 Academy of Science. He has been author and co-author of a number of papers 

 which have been published by the American Association of Petroleum Geologists. 



Arthur H. Youmans was born in Decorah, 

 Iowa. He graduated from Luther College in 

 Decorah, Iowa, where he majored in mathe- 

 matics, physics, and chemistry. Subsequently, 

 he served as staff member in the Nuclear 

 Physics Department of State University of 

 Iowa while attending graduate school. He 

 worked as staff physicist on OSRD project 

 engaged in electronics research and develop- 

 ment for military purposes during 1944 and 

 1945. After receiving his M.S. degree in 

 nuclear physics in 1948, he joined the staff 

 of Well Surveys, Inc. Since 1951, he has 

 been supervisor of research in nuclear well 

 logging for W.S.I. 



