CONTENTS 



CHAPTER IV 



PAGE 

 THE FUNGI t , .216 



Type XVIII 



PYTHIUM BAKYANUM ...,.* 218 



1. Structure . , , . . ,219 



2. Reproduction 



a. Asexual .,,.,, 221 



b. Sexual ..,,.. 224 



Type XIX 



PlLOBOLUS CRYSTALLINUS .,,,,, 228 



1. Structure ...... 229 



2. Reproduction 



a. Asexual ,,.,., 230 



b. Sexual . , . , .233 



Type XX 



SPH^EROTHECA CASTAGNEI 



1. Structure . < * c * 235 



2. Reproduction , , , , 237 



Type XXI 



PHYSCIA PARIETINA , , , 240 



1. Structure and Mode of Life . , . 241 



2. Reproduction ...... 247 



Type XXII 



PUCCINIA GRAMINIS ...... 253 



Type XXIII 



THE MUSHROOM (Agaricus campestris) , , , 266 



