Index. 



137 



Leaves, growth of, 23, 24 



shrinkage of, 64 



structure of, 65, 66 

 Lenticels, 78, 79 

 Light, reactions to, 113, 114, 116, 



"7 

 Lily, 46 

 Mallow, 115 

 Mains (see Apple), 65 

 Malva, 114 



Maple (see Acer), 23, 64 

 Marchantia, 46, 67, 68 

 Material and apparatus, 2 

 Measurements, tables of, 2-4 

 Mignonette, 75 



Mimosa, 112, 118, T24, 125, 128 

 Mirror auxanometer, 20, 21 

 Motor organs, 113, 116, 117, 121 

 Mullein, 36 

 Mustard, 52 

 Mycorrhizas, 96, 97, 98 

 Myriopliylhtni, 89 

 Narcissus, 24, 40, 46, log, 124 

 Nectar, 108, 109 

 Nettle (see Urticd) , no, in 

 Nutrition, 82-99 

 Oak (se» Quercus), 65, 76, 79 

 Oats (see Avena), 28, 35, 36, 114, 



"5 

 Onion (see Allium), 36, 46,119, 134 

 Opuntia, 125, 126 

 Oryza (see Rice), 72 

 Osmometer, 48, 53, 54 

 Osmose of gases, 80, 81 



of liquids, 47, 48, 49, 50 

 Osmunda, 24, 36 

 Othonna, 66 

 Oxalis, 117 



Pansy (see Viola tricolor), 109, no 

 Parasites, 96 



Passiflora, 109 



Path of sap, 75, 76 



Pea (see Pisum), .25, 35, 62, 84, 



loi, 103, 104, 105, 120, 121 

 Peach (see Amygdalus), 23 

 Peltandra Virginica, 44, 45 

 Phalaris (see Canary grass), 115 

 Phaseolus (see Bean), 9, 25 

 Philotria, 89 

 Phototropism, 113, 114, 115, 116, 



117, 122 

 Pisum (see Pea), 25, 35, 41, 42, 62, 



120, 121 

 Plantago, 64 

 Plasmolysis, 52, 53 

 Populus, 79 

 Portulaca, 66, 126 

 Potato, 27, 28, 50 

 Potato osmometer, 50 

 Prpnula, 79, log, no 

 Propagation, 45, 46 

 Prttuus, 79 

 Purslane, 126 

 Quercus (see Oak), 65 

 Radish, 43 



Ragweed (see Ambrosia), 66 

 Ranunculus, 123 

 Raphanus, 43 

 Red color in leaves, 88 

 Reference books, 44 

 Reproduction and germination, 38- 



46 

 Respiration, loo-ni 

 Respiration tubes, 30 

 Rheum (see Rhubarb), 55 

 Rhubarb (see Rheum), 54 

 Rice (see Oryza), 72 

 Ricinus, 41, 42, 43, 44, log 

 Root-hairs, structure and action, 51, 



52 



