The Lost Sciences Of Africa: An Overview / Ivan Van Sertima -- Astronomy: African Observers Of The Universe: The Sirius Question / Hunter Havelin Adams Iii. New Light On The Dogon And Sirius / Hunter Havelin Adams Iii. Namoratunga: The First Archaeoastronomical Evidence In Sub-sahara Africa / B.m. Lynch And L.h. Robbins -- Agriculture: An Ancient Harvest On The Nile / Fred Wendorf, Romuald Schild, And Angela E. Close. African Cattle Bones Stir Scientific Debate / Bayard Webster -- Architecture And Engineering: The Pyramids: Ancient Showcase Of African Science And Technology / Beatrice Lumpkin. Great Zimbabwe: An Ancient African City-state / Molefi And Kariamu Asante. Aeronautics: African Experimental Aeronautics: A 2,000-year Old Model Glider / Khalil Messiha Et Al. -- Mathematics: Africa In The Mainstream Of Mathematics History / Beatrice Lumpkin. The Yoruba Number System / Claudia Zaslavsky -- Medicine: Black Contributions To The Early History Of Western Medicine / Frederick Newsome. The African Background Of Medical Science / Charles S. Finch -- Metallurgy: Steel-making In Ancient Africa / Debra Stone -- Navigation: Traditional African Watercraft: A New Look / Stewart C. Malloy -- Physics: An Outline Of Africa's Role In The History Of Physics / John Pappademos. Writing Systems: The Ancient Akan Script: A Review Of Sankofa / Niangoran-bouah. The Ancient Manding Script / Clyde-ahmad Winters -- Black Americans In The Field Of Science And Invention / Robert C. Hayden -- Lewis Latimer: Bringer Of Light / John Henrik Clarke -- Space Science: The African-american Contribution / Curtis M. Graves And Ivan Van Sertima -- Blackspace / James G. Spady -- Dr. Lloyd Quarterman: Nuclear Scientist (an Interview) / Ivan Van Sertima -- African-american Contributions To Information Technology / Kirstie Gentleman. Editor, Ivan Van Sertima. Bibliography: P. [295]-297.