EXAMINATION OF VEGETABLE POWDERS 19 



20. Cornus. 41. Populus. 



21. Dextrin. 42. Prinos. 



22. Frangula. 43. Quassia. 



23. Geranium. 44. Quercus. 



24. Glycyrrhiza (faint peculiar 45. Quillaja (causes sneezing). 



odor). 46. Rhamnus purshiana. 



25. Gossypium. 47. Rhus glabra fruit. 



26. Granatum bark. 48. Rhus toxicodendron. 



27. Hydrangea (resembling Jar- 49. Rubus. 



axacum. 50. Salix. 



28. Hyoscyamus seeds. 51. Sanguinaria. 



29. Ignatia beans. 52. Santalum rubrum. 



30. Kamala. 53. Sarsaparilla (soil odor 



31. Leptandra. marked). 



32. Linum. 54. Sassafras pith. 



33. Lycopodium. 55. Scilla. 



34. Magnolia. 56. Sinapis (when dry; alliaceous 



35. Menispermum. when moist). 



36. Mezereum. 57. Triticum repens. 



37. Nux vomica. 58. Veratrum viride. 



38. Pareira. 59. Viburnum opulus. 



39. Physostigma (bean-like). 60. Xanthoxylum. 



40. Phytolacca root (like Taraxa- 



cum). 



The student will find that many odors are very difficult of classi- 

 fication. The separation into aromatic and fragrant will depend 

 largely upon judgment; likewise the separation into agreeable, indiffer- 

 ent and disagreeable. It must, however, be remembered that there 

 are a great variety of factors which will modify the odor of drugs, as 

 has already been indicated, and as will be explained more fully in 

 subsequent chapters. 



The odor of the whole drug may differ qualitatively as well -as 

 quantitatively from that of the crushed, bruised or powdered drug. 

 The whole drug may have a characteristic odor, which may be masked 

 or obscured, due to other odors liberated by the crushing process. 

 For example, well-dried, uncrushed or only slightly bruised melissa 

 has a fragrant, lemon-like odor; when thoroughly crushed, .the frag- 

 rancy is almost entirely obscured by a very decided disagreeable 

 odor recalling crushed ants. Uncrushed Mentha viridis has a very fra- 

 grant odor, resembling that of the leaves of garden sweet Mary; 

 upon crushing there is developed an odor resembling catmint. Crude 



