VI CONTENTS. 



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 



x/ Sect. III. Op the Kinds or 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 Fibrillifomi Tissue 48 



Laticiferous Tissue ...... .49 



Intercellular System 50 



Epidermal System ... .... 51 



Sect. IV. Op the Contents op Cells . . . 52 



Sap, Sugar . . 53 



Starch .... ... .54 



Amyloid .55 



Oils, Wax, Vegetable Acids . .... 56 



Essential Oils, Tannin, Alkaloids 57 



ChlorophyU ... 58 



Earthy Incrustations 58 



Crystals or Eaphides, Cystolithes 59 



CHAPTER II. — OF THE GENERAL DEVELOPMENT AND 



MORPHOLOGY OF PLANTS 60 



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

 ment prom the Cell 61 



Plants of a Single Cell 61 



Plants of a Single Row of Cells ..... 65 



Plants of a Single Plane or Layer of Cells . . . .66 

 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 



