CONTENTS xi 
CHAPTER VIII 
-PuHytum II. CHLoRopHYcEAE: SIMPLE ALGAE 
PAGE 
General Characters. Two Classes. Green Slimes; Palmel- 
lales; Coenobiales. Confervas; Ulothrix; Oedogonium; 
RUA a peagincsldl hs co Reset oS Ae AER I a a ie 170 
CHAPTER IX 
PHYLUM Ill. crqoraromant ConsuGaTE ALGAE 
General Characters. Two Classes. Pond Series: Desmids. 
Diatoms. Origin of Zygophyceae .......... 177 
CHAPTER X 
PHYLUM IV. SipHONOPHYCEAE: TUBE ALGAE 
General Characters. Lower Tube Algae; Water Flannel; 
Green Felts. Tube Fungi; Water Molds; Downy Mil- 
dews; Black Molds; Insect Fungi. Higher Tube Algae; 
Bladder Algae; Sea Ferns; Sea Umbrellas; Stoneworts. 
UR tn eas Mer at Gta h AWOE o~,40 mb re oe 184 
CHAPTER XI 
Puytum V. PHABOPHYCEAE: Brown ALGAE 
General Characters. Origin. Ectocarpus. Kelps. Rock- 
PIN Com es Sg ora ns alle. ae) AiG) + Lagmtede 199 
CHAPTER XII 
Puytum VI. RuHopopHycEArE: Rep ALGAE 
General Characters. Cell-walls. Color. Reproduction. 
“Laver.”’ Nemalion. Corallina. Polysiphonia. “ Irish 
