246 Puget Sound Marine Sta. Pub. Vol. 1, No. 23 



SUMMARY 



(1). The gas in the float of Nereocystis contains carbon monoxide, 

 the quantity varying considerably in different individuals. 



(2). The presence of carbon dioxide is only occasional and the 

 quantity minute. 



(3). Previous work which tended to show that the quantity of carbon 

 dioxide and oxygen varies with the time of day has not been confirmed. 



CITATIONS 



1. Baeyer, A. Uber die Wasserentziehung und ihre Bedeutung fur das 

 Pflanzenleben und die Gahrung. Ber deut. Chem. Ges. 3: 63-78. 1870. 



2. Bertholet, M. Lecons sur les methodes general de synthese. Paris, 1864. 



3. Frye, T. C. Gas Pressure in Nereocystis. Puget Sound Marine Sta. 

 Pub. 1:85-88. 1916. 



4. Loeb, W. Zur Kentniss der Assimilation der Kohlensaure. Zeit. f. 

 Electrochem. 11: 745-52, 1905; 12: 282-312, 1906. 



5. Lucas, A. H. S. The Gases Present in the Floats of Certain Marine 

 Algae. Proc. Linn. Soc. New-South-Wales 36: 626-631. 1911. 



6. Rigg, G. B. Materials in a ton of kelp. Journ. Ind. and Eng. Chem. 8: 

 568-569., 1916. 



7. Rosanoff, M. Serge. Observations sur les fonctions et les proprietes des 

 pigments de diverses algues suivies de quelques donnees relatives a la 

 structure des formations protoplasmatiques. Mem. Soc. Imp. Sci. Nat. 

 Cherbourg. 13: 143-240. 1868. 



8. Spoehr, H. A. The Theories of Photosynthesis in the Light of Some 

 New Facts. Plant World. 19: 1-16, 1916. 



9. Stoklasa, J. and Zdobnicky, W. Uber photochemische Synthese der 

 Kohlenhydrate aus CO., und H., in Anwesenheit von KOH, und in 

 Abwesenheit von Chlorophyll. Monatsh. f. Chem. 32:53-75, 1911. 



10. , Uber die photochemische Synthese der Kohlenhydrate unter Ein- 



wirkung der iiltravioletten Strahlen. Biochem. Zeitschr. 41:333-372. 

 1912. 



11. Wille, N. Uber die Blasen der Fucaceen. Biologiska Forenings For- 

 handlingar in Stockholm. 1:63-65. 1898. (Just's Bot. Jahresber. 17: 



226. 1889.) 



12. Zeller and Neikirk. Gas Exchanges in the Pneumatocyst of Nereocys- 

 tis luetkeana (Mertens) P. & R. Puget Sound Marine Sta. Pub. 1: 25-30. 

 1915. 



