CONTENTS 



PTERIDOPHYTA (continued). 



MICROSCOPIC OBSERVATIONS- 

 PAGE 

 Stem 159 



Root 168 



Leaf 171 



Sporangia 172 



OOPHYTE 173 



YOUNG SPOROPHYTE 177 



BRYOPHYTA. 



A. MUSCI. 



POLYTRICHUM. 



GENERAL EXTERNAL CHARACTERS .... 179 



MICROSCOPIC INVESTIGATION 



OOPHYTE 180 



SPOROPHYTE 184 



B. HEPATIC^:. 



MARCHANTIA. 



GENERAL EXTERNAL CHARACTERS .... 189 



MICROSCOPIC OBSERVATIONS 190 



SPOROPHYTE 196 



THALLOPHYTA. 

 A. ALG^E. 



FLORIDE^E. 



POLYSIPHONIA 197 



PH^EOPHYCE^E. 



FUCUS .' 201 



CHARACE^E 2IO 



CONFERVOIDE^E. 



^DOGONIUM 216 



SIPHONED. 



VAUCHERIA 219 



CONJUGATE. 



SPIROGYRA 223 



