VX TABLE OF CONTENTS. 



CHAPTER VI. 



CLASSIFICATION AND DISTRIBUTION. 



PAGE 



General Laws of Classification. Principal Groups. General Ee- 

 lationship of the Branches. General Distribution of Plants. 

 Botanical Regions. Distribution of Plants in Geological Time ; 

 Tabular View 117 



CHAPTER VII. 



BEANCH I. PEOTOPHYTA : THE WATER- SLIMES, OE SEXLESS 

 PLANTS. 



General Characters. Schizophyceae, Fission Algae. Blue-green 

 Slimes. The Nostocs, etc. Bacteria. Appendix to Pro- 

 tophyta : The ' ' Slime-moulds " (Mycetozoa) 135 



CHAPTER VIII. 



BEANCH II. PHYCOPHYTA : THE SPOEE-TANGLES. 



General Characters. Chlorophycese, Green Algas. Protococcoi- 

 dea;. Conjugatae ; Desmids, Diatoms, Pond-scums, Black 

 Moulds, Insect-fungi. Siphoneae ; Botrydium, Green Felts, 

 Water-moulds, Downy Mildews. Confervoidese ; Sea-lettuce, 

 Conferva, Water-flannel, Oedogonium. Phaeophycese, Brown 

 Algse ; The Kelps, The Rockweeds 133 



CHAPTER IX. 



BEANCH III. CAEPOPHYTA : THE PHUIT -TANGLES. 



General Characters. Coleochaeteae. Rhodophycese, Red Sea- 

 weeds. Ascomycetese, Sac-fungi ; the Simple Sac-fungi, 

 the Truffles, the Black Fungi, Cup-fungi and the Lichens, 

 the Rusts, the Smnts. The Imperfect Fungi; Spot-fungi, 

 Black-dot Fungi, Moulds. The Higher Fungi ; PufE-balls, 

 Toadstools. Charopliycese, Stoneworts 167 



CHAPTER X. 



BRANCH IV. BRYOPHYTA : THE MOSSWORTS. 



General Characters. Hepatics, Liverworts, Musci, Mosses. . . . S07 



