316 



INDEX 



Uredinese, 253-265, 270 



affinities of, 295 



Uredo, 255, 265 

 Uredospores, 254, 255, 263 



VACUOLES, gas, 214 



pulsating, 161 



Vallecular cavities, 85 



Vascular bundles of Equisetum, 86 



Cryptogams, 1-108 



affinities of, 293 



Vauckeria, 174-182, 218 



affinities of, 293 



Veil. See Velum 



Velum, 269 



Venation of Male Fern, 41 



Vernation, 41 



Vessels of Ferns, 47 



WATER-FERNS, 34 



Wheat, rust and mildew of, 253 



Wood of Equisetum, 86 



of Male Fern, 46 



of Selaginella, 10 



XYLEM. See Wood 

 YEAST, 261 



ZOOGLCEA, 274 



Zoospores of Ectocarpus, 186, 187 



of (Edogonium, 151 

 -ofPythium, 221, 227 



of Ulothrix, 160, 165 



- of Vaucheria, 176 

 Zygomycetes, 228 



affinities of, 294 

 Zygospores, 164 



of Ectocarpus, 189 



of Pilololus, 233 



of Spirogyra, 171 



of Ulothrix, 164 



Printed by MOKRISON & GIBB LIMITED, Eih'nbitryh 



