INDEX 



303 



Periderm, 80 

 cork, 80 



illustrations of, 86 

 of cascara sagrada, illustrations, 

 84 



of white oak bark, illustration 

 of, 87 



parenchyma and stone cells, 85 

 stone cells, 85 

 Permanent mounts, 41 

 Pharmacognostic microscope, illus- 

 tration, 12 

 Phloem, centric bundle of calamus, 

 cross-section, illustration of, 

 294 



of ruellia rhizome, 226 

 of ruellia stem, 235 

 of spigelia rhizome, 223 

 of spigelia stem, 233 

 Phloem parenchyma, conduction by, 

 150 



of pink root, 221 



of ruellia rhizome, 226 



of ruellia root, 223 



of ruellia stem, 235 



of spigelia rhizome, 223 



of spigelia stem, 235 

 Photosynthetic tissue, 163 

 Pink root, description of, 227 

 Pith parenchyma, conduction by, 

 147 



of pink root, 221 



of ruellia rhizome, 227 



of ruellia root, 223 



of ruellia stem, 237 



of spigelia rhizome, 226 



of spigelia stem, 235 

 Pitted vessels, with bordered pores, 

 illustration of, 135 



illustrations of, 134 

 Plant hairs, forms of, 67 



introduction, 66 

 Polar caps, 55 

 Polarization microscope, 16 



illustration, 16 

 Pollen grains, 270 



non-spiny-walled, description of, 

 273 



smooth-walled, illustrations of, 

 271 



spiny-walled, description of, 273 

 spiny-walled, illustrations of, 272 



Preparation of specimens for cutting, 

 28 



Protoplast, 53 



Quassia wood, cross-section, illustra- 

 tion of, 255 



radial-section, illustration of, 257 

 Radial vascular bundles, 292 



skunk cabbage root, cross-sec- 

 tion, illustration of, 293 

 Raphides, illustrations of, 203 

 Reading glass, 4 



illustration, 4 

 Reagent set, illustration, 39 

 Reagents, list of, 38 

 Research microscope, 13 



illustration, 14 

 Reserve cellulose, illustrations of, 

 I 80-181 



Reticulate vessels, illustrations of, 133 

 Root hairs, 121, 122, 125 



illustration of, 123 



illustration of fragments, 124 

 Roots and rhizomes, 219 



diagnostic structures of, 227 

 Rosette and solitary crystals, illus- 

 trations of, 213 



crystals, illustrations of, 204 



crystals, inclosed, illustrations of, 

 206 



Ruellia ciliosa, Pursh., powdered, 

 illustration of, 229 

 ciliosa, Pursh., rhizome, cross- 

 section, illustration of, 225 

 ciliosa, Pursh., stem, cross-sec- 

 tion, illustration of, 236 

 root, description of, 227 

 root, illustration of, 222 

 Scalpels, 46 



illustration, 47 

 Scissors, 46 



illustration, 46 

 Sclariform vessels, illustrations of, 

 132 



Seeds, parts of, 289 



Secretion cavities, of celery fruit, 288 



description of, 176 



illustrations of, 1 69-1 71 



introduction, 166 



lysigenous, 168 



schizogenous, 168 



schizo-lysigenous, 168 



unicellular, 168 



