CONTENTS. 



Xlll 



Page 



Series 2. Heterosporia 424 



Order Selaginellaceae .... page 424 | Order Kliizocarpeae 426 



Division 2. Muscinese 427 



Musci 481 Marchantieas 434 



Hepaticae 433 Kicciaceee 434 



Anthocerotese 433 



CLASS II. THALLOPHYTA 435 



Division 1. Algae 435 



Characese 444 Confervoideae 451 



-Rhodospermeae 446 Oscillatoriacpee 453 



Eucaceae 449 Diatomaeeae 454 



Phaeosporeae 450 Volvocinese 455 



Division 2. Fungi 455 



Phycomycetes 455 Gasteromycetes .... 464 



Saprolegnieae 455 Ascomycetes 464 



Peronosporeae 457 Discomycetes 465 



Mucorini 458 Erysipheae 466 



Hypodermii 459 Tuberaceae , 467 



Uredineas 459 Pyrenomycetes 468 



Ustilagineae 461 Lichenes 468 



Ba'<idiomycetes 461 Myxomycetes 471 



Tremellini 462 Schizomycetes 471 



Hymenomycetes .... 462 



PART III. 



PHYSIOLOGY. 



CHAPTER I. 



PHYSIOLOGICAL ANATOMY OF PLANTS 473 



Sect. 1. THE STRUCTUBE OF PLANTS 473 



Sect. 2. THE CELL 476 



Form and Magnitude 476 



The Cell-wall 481 



Contents of the Cell 494 



Sect. 3. COMBINATIONS OF CELLS 506 



The Tissues 606 



TJie Systems 514 



