||P.4 bottom paragraph: "Some basic assumptions and their justification: [Investigators] deal with spherical cells with radii of 5 and 10µm these cells have surface areas of 314 and 1257µm^2, and volumes of 524 and 4189µm^3 respectively (Table 1 cf. the range of cell volumes for freshwater walled and wall-less phytoplankton algae quoted by Sicko-Goad, Stoemer and Ladewski, 1977). These cells are essentially non-vacuolate (cf. Sicko-Goad et al., 1977 Raven, 1980) [they]
posit a dry (organic) wt of the cells of 0.25 that of the wet wt (i.e. 250kg×m^-3 if the specific gravity of the cells is 1 Mg×m^-3), and a C content of the cells which is half of the organic wt (Table 1). The corresponding dry wt and C contents are given in Table 1, as in the N content for a C/N molar ratio of 7."