THE ALUMNI JOURNAL 



115 



DIFFERENTIAL DETERMINATION OF CRUDE DRUGS 



By J. A. Steffens, Phar. D. 



Written Especially for The Alumni Journal. 



(Copyrighted 1910 by Chas. A. Lotz). 



A. Roots, Rhizomes, Corms, Bulbs. 



HEADS ivith Rootlets. 

 Odorous 



Inodorous Veratrum 



Roots Numerous Valerian 



Roots Few 



Yellow internally Levisticum 



Yellowish internally Angelica 



HEADS with tap - root. 



With a Keel longitudinally, light 

 Without Keel, longitudinalla, dark 



SLICES. 



Pink internally Iris 



Yellow-Orange Calumba 



Vellow-Brown 



Yellow-White 



White 



Non Starchy 

 Starchy 



Reniform-shape 

 Irregular shape 

 Gray 



Senega 

 Taraxacum 



Polygonatum — irregular 

 Scilla — center-removed 



Bryony 



Colchicum 

 Arisaema 

 Dracontium 



PROMINENTLY WARTY. 



With Rootlets. 



Fine Roots, Close 



Stem Scars Hollow Spigelia 



Stem Scars Elevated 



Small Serpentaria 



Large Aspidium 



Thin Rootlets, Sparse 



Large, Gravish Gelsemium 



Small, Blackish Arnica 



Heavier Rootlets, Close 



Large Scars, Black Caulophyllum 



Small Scars, Brown Cypripedium 



