CONTENTS 



PAGE 



Fucus vesiculosus (Bladder wrack) 102 



Vaucheria sessilis (Green felt) 108 



Spirogyra (Pond scum, Green silk) 112 



Pleurococcus vulgaris (Green slime) 116 



Bacteria 119 



Phycomyces jiitens (or Rhizopus riigricans) 123 



Saprolegnia (Water mold) 127 



Albugo Candida (Blister blight) . . 131 



Exoascus deformans (Peach leaf-curl) 135 



Microsphaera Alni (Lilac mildew) 136 



Ustilago Zeae (Corn smut) . 138 



Agaricus campestris (Meadow mushroom) 140 



Puccinia graminis (Wheat rust; . . . ... . . . . 145* 



Isoetes (Quillwort) 149 



Equisetum (Horsetail) 155 



Lycopodium (Club-moss) 159 



SelagineUa (Little club-moss) 162 



Zamia floridana (A cycad) 168 



Pinus laricio (Austrian pine) 1 76 



Trillium (Wake-robin) 192 



