VI CONTKNTS. 



Transference of Fluid from Cell to Cell • . . . .33 



Increase of Cell-Walls in Thickness 34 



Markings of the Walls of Cells 36 



Dots or Pits 37 



Disks of Coniferous Wood 38 



Bands, Kings, or Spiral Markings ..... 39 



Gelatinous Coils 40 



Sect. III. Of the Kinds oh Transformations of Cellu- 

 lar Tissue, viz. Woody Tissue, Ducts, etc. 40 



Parenchyma 41 



Prosenchyma, Woody Tissue 41 



Bast Tissue 44 



Vascular Tissue or Vessels, Dotted Ducts, &c. . . .45 



Interlaced Fibrilliform Tissue 48 



Laticiferous Tissue 49 



Intercellular System , 50 



Epidermal System 51 



Sect. IV. Of the Contents of Cells . . .52 



Sap, Sugar . 53 



Starch 54 



Amyloid .......... 55 



Oils, Wax, Vegetable Acids 56 



Essential Oils, Tannin, Alkaloids . . . . . .57 



Chlorophyll 58 



Earthy Incrustations' 58 



Crystals or Raphides, Cystolithes 59 



CHAPTER II. — OF THE GENERAL DEVELOPMENT AND 



MORPHOLOGY OF PLANTS CO 



Sect. I. Plants of the Lower Grade; their Develop- 

 ment from the Cell 61 



Plants of a Single Cell CI 



Plants of a Single Row of Cells 65 



Plants of a Single Plane or Layer of Cells . . . . G6 



Plants of a Solid Tissue of Cells 67 



Plants with a Distinct Axis and Foliage • . . . .67 



Cellular and Vascular Plants ...... 68 



Flowerless or Cryptogamous Plants . . . . .69 



