XO. 10 ULTRA-VIOLET LIGHT ON GREEN ALGA — MEIER 9 



that is the wave lengths 3,130, 3,341, and 3,650 A., had no appreciable 

 lethal effect upon the algae. Yet by the thermocouple measurements 

 a greater intensity of light was directed on the cultures at wave lengths 

 3,130 and 3,650 A. 



LITERATURE CITED 

 Abbot, C. G. 



191 1. The sun's energy-spectrum and temperature. Astrophys. Journ., vol. 

 34, pp. 197-208. 

 Bang, Sophus. 



1904. Om Fordelingen af bakteriedraebende Straaler i Kulbuelysets Spek- 

 trum. Meddelelser fra Finsens Med. Lysinstitut, vol. 9, pp. 123-135. 

 Bayne-Jones, S., and Van der Lingen, J. S. 



1923. The bactericidal action of ultra-violet light. Johns Hopkins Hosp. 

 Bull., vol. 34, pp. 11-15. 

 BiE, Valdemar. 



1899. Unders^gelser om Virkningen af Spektrets forskellige Afdelinger paa 

 Bakteriers Udvikhng. Meddelelser fra Finsens Med. Lysinstitut, 

 vol. I, pp. 33-74- 

 BoviE, W. T. 



1915. Action of light on protoplasm. Amer. Journ. Trop. Diseases and 



Prev. Med., vol. 8, pp. 506-517. 



1916. The action of Schumann rays on living organisms. Bot. Gaz., vol. 61, 



pp. 1-29. 

 1923. Ultra-violet cytolysis of protoplasm. Journ. Morph., vol. 38, pp. 295- 

 300. 

 Brackett, F. S. and McAlister, E. D. 



1930. The automatic recording of the infra-red at high resolution. Rev. 



Sci. Instruments, vol. i, pp. 181-193, 1930. 

 1932. A spectro-photometric development for biological and photo-chemical 

 investigations. (To be published shortly by the Smithsonian 

 Institution.) 

 Browning, C. H., and Russ, Sidney. 



1917. The germicidal action of ultra-violet radiation, and its correlation 



with selective absorption. Proc. Roy. Soc, ser. B, vol. 90, pp. 33-3^- 

 BucHOLTZ, Alex. F. 



1931. The eflfect of monochromatic ultra-violet light of measured intensities 



on behaviour of plant cells. Ann. Missouri Bot. Garden, vol. 18, 

 pp. 489-508. 



BUSCK, GUNNI. 



1904. Lysbiologi.— En Fremstilling af Lysets Virkning paa de levende 



Organismer. Meddelelser fra Finsens Med. Lysinstitut, vol. 8, 



pp. 7-III- 

 Cernovodeanu, p., and Henri, Victor. 



1910. £tude de Taction des rayons ultraviolets sur les microbes. Acad, des 



Sci. Comptes Rendus, vol. 150, pp. 52-54- 

 1910. Comparaison des actions photo-chimiques et abiotiques des rayons 



ultraviolets. Idem, vol. 150, pp. 549-551- 

 1910. Action des rayons ultraviolets sur les microorganismes et sur dif- 



ferentes cellules. Etude microchimique. Idem, vol. 150, pp. 729-731- 



