CONTENTS. 5 



Page. 



27. Determination of Nitrogen 28 



28. Determination of Phosphoric Acid 29 



29. Determination of Lime 30 



30. Determination of Alkali 31 



PART III. CHEMISTRY OF PLANTS. 



31. Moisture in the Plant 33 



32. Composition of Dry Matter of Plants 33 



33. Composition of Plant Ash 34 



34. ^ Nitrogen in Plants 36 



35. > Plant Nutrition 36 



36. Nitrogen in Nodules. 39 



37. Tests for Principal Classes of Plant Compounds . . 40 



38. Occurrence and Extracting of Starch 41 



39. Inversion of Cane Sugar 42 



40. Preparation of Glucose 42 



41. Essential Oil From Plants 43 



42. Extraction of Proteids 43 



43. Extraction and Decomposition of Chlorophyll. . 44 



44. Determination of Oil in Flaxseed 44 



45. Absorption of Manure by the Soil 45 



46. Fertilizer Field Tests 45 



PART IV. AGRICULTURAL BOTANY AND PLANT 

 PROPAGATION. 



47. Conditions Necessary for Germination. 47 



48. Purity of Seed and Germination Test 47 



49. Plump and Shrunken Seeds 49 



50. Depth of Germination 49 



51. Osmosis 50 



52. The Work of Leaves 51 



53. Study of the Characters of Barley 52 



54. Outline for Describing Grasses 58 



55. Identification of Clover and Grass Seeds 59 



56. Cuttings and Their Use in Propagation 60 



57. Establishing a Deciduous Orchard 62 



58. Grafting 65 



59. Budding 69 



