Includes "The Social Power of the Negro" by James P. Comer, "The Induction of Cancer by Viruses" by Renato Dulbecco, "The Changing Helicopter" by Alfred Gessow, "The Antiquity of Human Walking" by John Napier, "Neuron-Actrivation Analysis" by W. H. Wahl and H. H. Kramer, "Rivers in the Making" by H. F. Garner, "The Evolution of Bee Language" by Harald Esch, and "Antimatter and Cosmology" by Hannes Alfven.

(Key Words: Social Power, Negro, Scientific American, Magaz, ines, Science, James P. Comer, Cancer by Viruses, Renato Dulbecco, Helicopters, Alfred Gessow, Walking, John Napier, Neurons, W. H. Wahl, H. H. Kramer, Rivers, Evolution, Bees, Harald Esch, Antimatter, Cosmology, Hannes Alfven).