Fig. 7. Some organisms of the nanoplaiikton. 

 I, Cliromuliiia pusilla; 2, Paploua gyrans; 3, Cryptomoiias acuta; 4, Platymonas apiadata; 5, Hemi- 

 selmis rufescens; 6, Brachiomonas suhmarina; 7, Chrysochromulina minor; 8, Pyramimonas grossi; 

 9a, Isodirysis galbana; gh, the same dividing; 10, Dicrateiia inornata; 11, DunaUella parva; 12, Bi- 

 pedimoiias pyriformis; 13, Thalassomonas pusilla; 14, Brachiomonas simplex; 15, Male spore of bladder- 

 wrack (Fucus); 16, Asexual spore of oarweed (Saccorhiza). 

 AU to approximately the same scale, except ib which is from a photograph taken with an 



electron microscope. 



