SYSTEMATIC INDEX. 



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 of 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, J). 10. — § 12. Composition, Qualitative ; Oleic and 

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

 cerine, p. 12.— § 11. 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 Propei-ties 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 Ethei-eal Oils, p. 27. — § 31. Hydrocarbons and 

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



