CONTENTS. ix 



PAGE 



Digestion of Proteins ; Pepsin and Peptic Digestion ; Trypsin 



and Tryptic Digestion ... ... ... ... ... ... 47 



Amino Acids and their Derivatives; Asparagin, Tyrosin, etc.... 50 



Carbohydrates ; Reactions of Glucose, Maltose, Sucrose ; Micro- 

 chemical Tests for Sugars ... ... ... ... ... 52 



Experiments with Starch ; Starch Grains in Potato Tuber ; 



Leucoplasts; Dextrin ... ... ... ... 56 



Digestion of Starch ; Translocation of Starch in Germinating 



Seeds; Inulin ... ... ... ... ... ... ... 61 



Tests for Cellulose ; Lignified Walls ; Corky Walls ; Cutinised 



Walls; Gums and Mucilages ... ... ... ... ... 67 



Glucosides ; Tannins ... ... ... ... ... ... ... 71 



Oils ; Digestion of Fatty Oils ; Resins ; Latex 74 



Organic Acids ; Oxalic, Tartaric, Citric, and Malic Acids ... 80 

 Mineral Deposits ; Calcium oxalate, Calcium carbonate, Silica ... 82 

 Extraction of Non-nitrogenous and Nitrogenous Organic Sub- 

 stances from Plants 83 



CHAPTER III. 



HISTOLOGY OF ANGIOSPERM STEM, ROOT, LEAF, 

 AND FLOWER. 



Vegetable Marrow Stem General Anatomy, Details of Trans- 

 verse and Longitudinal Sections ; Maceration of Herbaceous 

 Stem ... 87 



Sunflower Stem ; Aristolochia Stem ; Maize Stem ; Distribution 

 of Stereom in Herbaceous Stems ; Structure of Aquatic 

 Stems ..: 95 



Apical Meristem of Stem (Lilac, Elodea, Hippuris) .... ... 101 



Woody Stems ; T.S., Radial and Tangential L.S. of Lime Stem 103 



Maceration of Woody Stems ; Development of Cork and of 



Lenticels 106 



Examination of Entire Roots ; General Structure of Roots ; 



Root-hairs ; Xylem Vessels in Root 109 



General Anatomy of Bean Root ; T.S. of Young Bean Root ; 

 Secondary Thickening of Bean Root ; Roots of Woody 

 Dicotyledons and of Monocotyledons ; Apical Meristem of 

 Root .. Ill 



