REFERENCES I4I 



2^^ PAAUW, F. VAN DER (1932). Rec. Ttav. hot. neerl., 29, 497-620 



(112) 

 ^^" PARKE, M. (1948). J^. Mar. biol. Ass. U.K., 27, 651-709 (123, 124) 

 22^ PAYEN, J, (1938). Rev. algoL, 11, 1-99 (92-4, 98) 



222 PEARSALL, w. H., and BENGRY, R. P. (1940). Ann. Bot., Lond., 



N.S. 4, 486-94 (58) 



223 PEARSALL, w. H., and FOGG, G. E. (1951). Food Sci. Ahstr.y 23, 



i-ii (5) 



2 24 PEARSALL, W. H., GARDINER, A. C., and GREENSHIELDS, F. (1946) 



Freshwater Biological Association, Publication no. 11 (108) 



225 PEARSALL, w. H., and LOOSE, L. (1937). Proc. roy. Soc, B, 121, 



451-501 (3, 92, 107, 108, no, 115, 120, 123) 



226 PERCIVAL, E. G. V. (1950). Structural carbohydrate chemistry, 



Frederick Muller Ltd., London (92) 

 22' PERCIVAL, E. G. V., and CHANDA, s. K. (1950). Nature, Lond., 



166, 787-8 (96) 

 228 PERCIVAL, E. G. V., and ROSS, A. G. (1948). Nature, Lond., 162, 



895-6 (95) 



22^ (1950)- J' chem. Soc, 1950, 717-20 (98) 



2^" (1951). y. chem. Soc, 1951, 720-6 (94) 



231 PERCIVAL, E. G. V., and THOMSON, T. G. H. (1942).^^. chcm. Soc, 



1942, 750-5 (97) 



232 piRsoN, A., and wilhelmi, g. (1950). Z. Naturf., 5 b, 211-18 



(112, 113, 119) 



233 PRATT, R. (1943). Amer.y. Bot., 30, 32-3 (120) 



234 PRATT, R., and FONG, J. (1940). Amer. J. Bot., 27, 431-6 (114) 

 235 (1940)- Ainer. J. Bot., 27, 735-43 (74. 75) 



236 PRESTON, R. D., and kuyper, b. (195 i). y. exp. Bot., 2, 247-55 



(95) 

 23' PRIESTLEY, J. (i779, 1781). Experiments and observations relating 

 to various branches of natural philosophy; with a continuation 

 of the observations on air, vols, i and 2, J. Johnson, London 

 (2) 

 238 pRiNGSHEiM, E. G. (1914). Beitr. Biol. Pfl.., 12, 49-108 (74) 

 (1937)- Nature, Lond., 139, 196 (51) 

 (1941). Biol. Rev., 16, 191-204 (62, 63) 

 (1946). Pure cultures of algae, Cambridge University Press 



239 

 240 

 241 



242 



243 

 244 



(3, 84, 87) 



— (1948). New Phytol., 47, 52-87 (61-3) 



— (1949). Bad. Rev., 13, 47-98 (49, 62)" 

 (1951). Arch. MikrobioL, 16, 18-27 (555 59> 62) 



244a (1952). Quart. J. micr. Sci., 93, 71-96 (50, 95) 



2*5 PRINGSHEIM, E. G., and PRINGSHEIM, o. (1952). Ncw Phytol., 

 51, 65-76 (62) 



2*6 PROVASOLI, L., HUTNER, S. H., and SCHATZ, A. (1948). PrOC SoC 



exp. Biol., N.Y., 69, 279-82 (62) 

 2*' RABINOWITCH, E. I. (1945). Photosynthesis and related processes, 

 vol. I, Interscience Publishers, Inc., New York (i, 15, 16, 

 19, 20, 29-33, 39, 44, 48-50, 73) 



