242 



INDEX 



Plant proteins, 64, 135, 150 



respiration, 117 



tissues, 70 



, reactions for, 57 



Plastids, 72 

 Plerom, 77, *78 

 Polar caps, *75, 76 

 Polarization, 219 

 Polarized light, 219 

 Polarizer, 220 

 Pollen, *193, 194 

 Porous fibers, 105, *106, *107, 

 108 



parenchyma, *125, 127 



stone cells, *109, 110 

 Primary cortex, *78, 79, 154 



epidermis, *78, 79, 152 



medullary rays, 80, *82 



periderm, 81, *82 



root tissues, 77,-*78, 151 



stem structures, 83, 163, *165 

 Principal axis, 26, *27, "28, *29 



focus, 26, *27, *28, *29 

 Prismatic crystals, 146, *149 

 Prisms, nicol, 220 

 Process, clearing, 4 



, dehydrating, 3 

 , embedding, 6 

 , fixing, 2 

 , infiltration, 5 



Production of real images, 27, 

 *28 



virtual images, 28, *29 



Prosenchyma, 84 

 Protective tissues, 87 

 Protoplasm, 71 



Protoplasmic contents, 71, *71 

 Pyrogallol solution, 228 



R 

 Radial bundles, 129, *130 



section, 7 



Raphides, 146, *149 



Rays, 80, 124, 161, 179, *180 5 



*181 



, functions of, 124 

 Reactions for aleurone, 64 



alkaloids, 62 



calcium carbonate, 65 



oxalate, 63 



cellulose, 58 



cutin, 59 



fats, 65 



glucosides, 63 



gums, 60 



inulin, 61 



lignin, 58 



pectins, 60 



resins, 64 



silica, 65 



starch, 61 



suberin, 59 



sugars, 62 



tannin, 64 



Real images, 27 



, formation of, 27, *28 



Reference books, 232 

 Refraction, 19, 24, *25 



in concave lenses, 27, *27 



convex lenses, 27, *27 



Regulation of transpiration, 118 

 Removal of embedding media, 14 

 Reserve cellulose, 112, 141 



starch, 134, 143 

 Resins, 64, 148 

 Resolving power, 38 

 Respiration in plants, 117 

 Reticulate ducts, 121, *123 

 Retina, 24 



Rhizomes, 183 



Ribbon carrier, 13, *13 



sections, 13 

 Root bark, 158, *172 



bundles, *78, *82, 156 



