CONTENTS 



PAGE 



PREFACE vii 



MYXOPHYCE.E (or CYANOPHYCE.E) . 1 



PERIDINIE.E 49 



Gymnodiniacecc .......... 51 



Pyrocystacete .......... 55 



Phytodiniaceae 57 



Peridiniaccio 58 



Prorocentracea) ..... .... 76 



BACILLARIE.E 83 



CHLOROPHYCE/E . 126 



Isokontae . . ... . 156 



Protococcales 160 



Siphouales . . . . . 222 



Siphonocladiales ......... 250 



"-Ulvales. 275 



Schizogoniales . 279 



Ulotrichales ... . . 281 



Akontae ... . 328 



ConjugatcB 328 



Stephanokontae ... . . . 385 



(Edogoiiiales 385 



Heterokontaa . . 401 



^ Heterococcales ... 403 



_ Hcterotricbales . . . . . . . . . 411 



^Heterosiphonales . . 414 



THE OCCURRENCE AND DISTRIBUTION OF FRESHWATER ALG^E . 418 



Subaerial Associations ... . 419 



Associations of Irrorated Rocks . . 422 



Aquatic Associations . . . 423 



ADDENDA 452 



INDEX . 455 



