Smithsonian miscellaneous collections . rooororOfO^^^ inu)(C 101£ (^ 00 000)0)0 ~ (*)(MNCMCMcMCMMCsJ woJN (NJN (\J(\i (\J(VjCNj(*)rO CO An al^al .spectroKraiii, obtained by exposing plate 42 of ChlorcUa vulqaris toultraviolet rays for ( i) 64 minutes. (2) 16 minutes, and (3) 2,^ minutes, .super-miposed on a diagram of the intensities of the wave lengths. The abscissae are wave lengths in angstroms: the ordinates are intensitiesm thousands of ergs SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95, NUMBER 3 LIQUID-PROPELLANT ROCKETDEVELOPMENT (With 11 Plates) BYROBERT H. GODDARD Clark Uni

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Smithsonian miscellaneous collections . rooororOfO^^^ inu)(C 101£ (^ 00 000)0)0 ~ (*)(MNCMCMcMCMMCsJ woJN (NJN (\J(\i (\J(VjCNj(*)rO CO An al^al .spectroKraiii, obtained by exposing plate 42 of ChlorcUa vulqaris toultraviolet rays for ( i) 64 minutes. (2) 16 minutes, and (3) 2,^ minutes, .super-miposed on a diagram of the intensities of the wave lengths. The abscissae are wave lengths in angstroms: the ordinates are intensitiesm thousands of ergs SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95, NUMBER 3 LIQUID-PROPELLANT ROCKETDEVELOPMENT (With 11 Plates) BYROBERT H. GODDARD Clark University

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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience