Contents

10 March 1972
Vol 175, Issue 4026

About The Cover

End view of a flame burning horizontally on a porous plug burner (2.5 centimeters in diameter). A focused laser beam is passing vertically through the flame for Raman scattering experiments. See page 1112. [S. W. Blanchard, Graphics Unit, General Electric Co., Corporate Research and Development, Schenectady, New York]