Smithsonian miscellaneous collections . onogr. B-792, pp. , Florence E. 1932. Lethal action of ultra-violet light on a unicellular green alga. Smith-sonian Misc. Coll., vol. 87, no. 10, pp. i-ii. 1934. Lethal response of the alga Chlorella vulgaris to ultraviolet rays. Smithsonian Misc. Coll., vol. 92, no. 3, pp. 1-12. 1935. The microscopic plant and animal world in ultraviolet light. Ann. Rep. Smithsonian Inst. 1933, pp. , Robert H. 1934. Results of irradiating Saccharomyces with monochromatic ultravioletlight. Journ. Gen. Physiol., vol. 18, no. 2, pp. , T
Smithsonian miscellaneous collections . onogr. B-792, pp. , Florence E. 1932. Lethal action of ultra-violet light on a unicellular green alga. Smith-sonian Misc. Coll., vol. 87, no. 10, pp. i-ii. 1934. Lethal response of the alga Chlorella vulgaris to ultraviolet rays. Smithsonian Misc. Coll., vol. 92, no. 3, pp. 1-12. 1935. The microscopic plant and animal world in ultraviolet light. Ann. Rep. Smithsonian Inst. 1933, pp. , Robert H. 1934. Results of irradiating Saccharomyces with monochromatic ultravioletlight. Journ. Gen. Physiol., vol. 18, no. 2, pp. , Thomas M., and Gates, Frederick L. 1928. Ultra-violet light and vaccine virus. Journ. Exp. Med., vol. 47, , Carl 1928. Die Abhiingigkeit der lichtbiologischen Reactionen von der Wellen-liinge. Strahlentherapie, vol. 28, pp. , Israel 1930. Quantitative biological effects of monochromatic ultraviolet Opt. Soc. Amer., vol. 20, pp. 432-456. 1 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95, NO. 2, 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 secern.
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