VI CONTENTS. 



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



Increase of Cell- Walls in Thickness ..... 34 



Markijigs of the Walls of Cells 36 



Dots or Pits 37 



Disks of Coniferous Wood ....... 38 



Bands, Rings, or Spiral JNIarkings ..... 39 



Gelatinous Coils ......... 40 



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

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



Parenchyma . . . . . . . . . 41 



Prosench^ma, W^oody 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 61 



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



Sap, Sugar 53 



Starch 54 



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



Oils, Wax, Vegetable Acids 56 



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



Chlorophyll 58 



Earthy Incnistations ........ 58 



Crystals or Raphides, CystoUthes . . . . . 59 



CHAPTER II. — OF THE GENERAL DEVELOPMENT AND 



MORPHOLOGY OF PLANTS 60 



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



mp:nt from 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 



