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 PART 2. SCIENTIFIC REPORTS 53 



Possible application of a bacterial bioassay in 

 productivity studies. 



William Belser 55 



SCOPE measurements of productivity, chlorophyll 

 "a", and zooplankton volumes. 



R. W. Holmes, M. B. Schaefer, and 



B. M. Shimada 59 



Size fractionation of photosynthesizing 

 phytoplankton . 



Robert W. Holmes 69 



Diurnal variation in the photosynthesis of 

 natural phytoplankton populations in 

 artificial light. 



Robert W. Holmes and Francis T. Haxo 73 



Attachment of marine bacteria to zooplankton. 



Galen E. Jones 77 



Preliminary studies of bacterial growth in 

 relation to dark and light fixation of 

 Cl*K)2 during productivity determinations. 



G. E. Jones, W. H. Thomas, and F. T. Haxo ... 79 



The effects of organic and inorganic 



micronutrients on the assimilation of C^ by 

 planktonic communities and on bacterial 

 multiplication in tropical Pacific sea water. 



Galen E. Jones and William H. Thomas 87 



The vertebrates of SCOPE, November 7 - 

 December l6, 1956. 



Robert Cushman Murphy 101 



The alcohol- soluble and insoluble fractions of 

 the photosynthetically fixed carbon in 

 naturally occurring marine phytoplankton 

 populat ions . 



William H. Thomas 113 



