POWDERED DRUGS AND FOODS. 711 



II. Without Fibrovascular Tissue. 



A. With cellular tissues. 



Spores about 7 t^ 195. Ustilago 



Numerous oil globules 196. Ergota 



Thick-walled cells of capsules 197. Opium 



Fragments of woody tissues 198. Goa Powder 



B. Without cellular tissues. 



a. Possessing oil. 



Grayish fragments 199. Asafetida 



Yellowish or yellowish-brown fragments 200. Myrrha 



b. Without oil. 



a Remaining opaque in glycerin. 



Characteristic odor 201. Aloes (Socotrine) 



Characteristic odor 202. Benzoinum 



Grayish opaque fragments 203. Elaterinum 



Brownish angular masses 204. Lactucarium 



P More or less translucent in glycerin. 



Dark brown 205. Aloes (Curagao) 



Yellowish-brown 206. Aloes (Socotrine) 



With acicular crystals 207. Gambir 



Few fragments of tissues 208. Catechu 



Fragments translucent, deep red 209. Kino 



POWDERS OF A REDDISH COLOR. 



I. Containing Starch. 



Very light pink, crystals present ; 210. Quillaja 



Reddish, crystals wanting 211. Sanguinaria 



II. Without Starch. 



A. Stone cells present. 



Characteristic stone cells 212. Capsicum 



Characteristic stone cells 213. Illicium 



Mucilage cells and sclerenchymatous fibers 214. Cydonium 



Characteristic glandular hairs 215. Rhus Glabra 



Non-glandular hairs 0.5 to 2 mm. long 216. Rosa Canina 



Woody tissues only 217. Willow Charcoal 



B. Stone cells wanting. 



a. With wood fibers. 



Coloring principle soluble in water 218. Haematoxylon 



Coloring principle insoluble in water. 219. Santalum Rubrum 



b. Wood fibers wanting. 



Blue with sulphuric acid 220. Crocus 



Containing tannin 221. Kino 



Large glandular hairs 222. Lupulinum 



