Vlll 



CONTENTS. 



CHAPTEK II.-(THE TISSUES. 



27. The Connexion of the Cells . 



28. Intercellular Spaces 



29. Forms of Tissue . 



30. General Morphology of the Tissue-SyJ 



31. The Primary Tegumentary Tissue 



32. The Fundamental Tissue-System 



33. The Vascular Tissue-System 



34. Histology of the Development of S^li^ndary Members 



35. The Formation of Secondary Tissue 



36. Formation of Tissue in consequence of Li/jury 



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PART III.— THE GLASSIFWATION OF PLANTS. 

 Introductory f. 216 



GEOUP I. THALLOPHYTA . 

 Class I. Algae . 



Sub-Class I. Cyanophyceae (Phy^ 

 Order 1. Chroococcacese 

 ,, 2. NostocacesB 

 ,, 3. Oscillariaceffi 

 „ 4. Kivulariaceae 

 ,, 5. ScytonemaceaB 

 Sub- Class II. Chlorophyceae 

 Series I. Protococcoideae 

 Order 1. Pleurococcaceae 

 ,, 2. Protococcaceae 

 Series II. Volvocoidese 



Order 1. ChlamydomonE 

 ,, 2. Volvocacese 

 Series III. SiphonoidesB 

 Order 1. Siphonaceee 

 ,, 2. Cladophoraceae 

 ,, 3. Hydrodictyaceee 

 Series IV. Confervoidese . 

 Order 1. Conjugatae . 

 ,, 2. Ulothrichaceae 

 ,, 3. ChsetophoracesB 

 „ 4. UlvacesB 

 ,, 5. OEdogoniaceee 

 ,, 6. Coleochaetaces 

 Series V. Charoideae 

 Order 1. Characeae 

 Sub-Class III. Phasophyceae . 

 Order 1. Syngeneticae 

 „ 2. Diatomaceae 

 Series (a). Phaeosporeae 

 Order 3. EctocarpaceaB 



chromaceai) 



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