SYSTEMATIC IXDEX. 



PAGE 



INTRODUCTION 1 



1. General Remarks, p. 1. 2. Object of ,the Work ; Division 

 of Matter, p. 2. 3. Leading Principles in the Analysis of 

 Plants, p. 3 

 METHOD OF EXAMINATION FOR THE MORE IMPORTANT 



CONSTITUENTS OF PLANTS .... 5 



I. PRELIMINARY OPERATIONS. ESTIMATION OP MOISTURE AND ASH . 5 



4. Drying the Materials, p. 5. 5. Treatment of Fresh Plants, 

 p. 6. 6. Pulverization, p. 6. 7. Estimation of Ash, p. 7 



II. EXAMINATION OF THE SUBSTANCES SOLUBLE IN PETROLEUM SPIRIT ; 



ETHEREAL AND FIXED OILS, WAX, ETC. .... 8 

 8. Value of Petroleum Spirit in the Analysis of Plants, p. 8. 

 9. Methods of Extraction, p. 8. 10. Treatment of Fresh 

 Aromatic Vegetable Substances, p. 10 



EXAMINATION OF THE FIXED OIL . . . . .10 



11. Macroscopical and Microscopical Detection ; Total Esti- 

 mation, p. 10. 12. Composition, Qualitative ; Oleic and 

 Linoleic Acids, p. 11. . 13. Quantitative; Estimation of Gly- 

 cerine, p. 12. 14. Cetyl-, Cerotyl-, Melyl- Alcohol, p. 13. 

 15. Volatile Fat- Acids, p. 13. 16. Non- volatile Fat- 

 Acids; Separation, p. 14. 17. Determination of Melting- 

 Point, p. 14. 18. Melting-Points of the more important Fat- 

 Acids and Mixtures of the same, p. 15. 19. Further Remarks 

 on Oleic, Ricinoleic Acid, etc., p. 18. 



CHLOROPHYLL AND ALKALOIDS EXTRACTED SIMULTANEOUSLY WITH 



THE FIXED OIL ....... 19 



20. Optical Properties and Detection of Chlorophyll, p. 19. 

 21. Influence of Fixed Oil in Determining the Solution of 

 Alkaloids, p. 20. 



EXAMINATION OF THE ETHEREAL OIL . . 21 



22. Detection and Estimation, p. 21. 23. Estimation in the 

 Presence of Fixed Oil and Resin, p. 22. 24. Distillation of 

 Larger Quantities of Ethereal Oil, p. 23. 25. Examination 

 of the Aqueous Distillate for Volatile Acids, Formic, Acetic, 

 Acrylic, Toxicodendric, Salicylous Acid, p. 23. 26. Salicylic, 

 Benzoic, Cinnamic Acid, Styracin, Cinnamein and Aldehydes 

 of above Acids, p. 24. 27. Physical Properties of Ethereal 

 Oils ; Umbelliferone, p. 25. 28. Reactions, p. 26. 29. 

 Ethereal Oils containing Nitrogen and Sulphur, p. 26. 30. 

 Constituents of Ethereal Oils, p. 27. 31. Hydrocarbons and 

 Oxygenated Constituents, Stearoptenes, p. 28. 32. Other 



