POWDERED DRUGS. 
273 
Characteristic odor 160. Aloes (Rocotrine) 
Characteristic odor 161. Benzoinum 
Grayish opaque fragments 162. Elaterinum 
Fragments of woody tissues 163. Goa Powder 
Brownish angular masses 164. Lactucarium 
P More or less translucent in glycerin. 
Dark Brown ... 165. Aloes (Curacao) 
Yellowish brown 166. Aloes (Socotrine) 
Characteristic odor 166a. Benzoinum 
Few fragments of tissues 167. Catechu 
Fragments translucent deep red 168. Kino 
Powders of a Reddish Color. 
I. Containing Starch. 
Very light pink, crystals present 169. Quillaja 
Reddish, crystals wanting 170. Sanguinaria 
II. Without Starch. 
A. Stone cells present. 
Characteristic stone cells 171. Capsicum 
Characteristic secretion hairs 172. Rhus Glabra 
B. Stone cells wanting. 
a. With wood fibers. 
Coloring principle soluble in water . 173. Hsematoxylon 
Coloring principle insoluble in water, 
174. Santalum Rubrum 
b. Wood fibers wanting. 
Blue with sulphuric acid 175 Crocus 
Containing tannin 176. Kino 
Large secretion hairs 177. Lupulinum 
Characteristic odor 178. Opium 
Epidermal cells with papillae • • . . . 179. Rosa Gallica 
Powders of a Whitish Appearance. 
I. Plant Tissues or Cell-Contents Recognizable. 
A. Containing starch. 
a. Only unaltered starch grains present. 
Excentral and fissured point of origin of growth, 
180. Maranta Starch 
Excentral and circular point of origin of growth, 
181. Potato Starch 
Polygonal grains 182. Corn Starch 
Small, polygonal, compound grains . . 183. Rice Starch 
Ellipsoidal, point of origin of growth indistinct, 
184. Wheat Starch 
