146 



INDEX. 



Plasmolysis, 70 



Polariscope, 33, 84 



Polarity, 115 



Polygons, 18, iq, 55 



Potometers, So, 139 



Pressure-gauges, 68 



Pressure, geotropic, 124 



Pressure in growth, 112 



Pressures, to measure, 45 



Proportioning of topics, 8 



Protection, 135 



Protoplasm, 50, 51, 59 



composition, 51, 52 

 properties, 51 

 structure, 51 



Protoplasts, 52, 60 



Pure color chamber, 89 

 screens, 89 



Pure colors, 109, 139 



Pyrogallic acid, 95 



Q 



Quantitative methods, 5, n 



R 



Recording-pen, 103, 104, 105 



Records, 15, 16 



Rectipetality, 115 



Reproduction, 115, 116 



Resistance-measurer, 123 



Respiration, 95 



Respirometer, 98 



Response, geotropic, 121, 122, 123 



Resting-period, 115 



Rheotropism, 133 



Root-hairs, 51, 61 



to raise, 61 



Root-pressure, 67, 68, 69, 76 

 Root-tubercles, 73 

 Rough glass, to smooth, 39 

 Rubber stamp, 34 

 Rubber stoppers, 34 

 Rubber, to cut, 41 

 Rubber tubing, 34 



Sachs' curvature, 116 

 Sap ascent, 75, 76 

 Sealing glass tubes, 39 

 Secretion, 100 

 Sediment, to remove. 43 

 Seedlings, to grow, 45 

 Seeds, germination, 140 



Seeds for study, 37 

 Semi-permeable, 64 

 Sensitive plant, 38, 132 

 Shading of greenhouses, 28 

 Shock, mechanical, 58 

 Simplification of apparatus, 6 

 Siphon, to start a, 40 

 Skeleton of plants, 60 

 Slat-shading, 30 

 Sleep movements, 129 

 Soil-temperature, 82 

 Soyka flasks, 37, 87, 108 

 Spectroscope, 33, 72. 87, 108 

 Spectrum of chlorophyll, 87 

 Speculation, 19 

 Sphagnum, 37 

 Spring-balance, 78 

 Standards, metric, 46 

 Starch, 84 



Starch-formation, 85 

 Stem-growth, 106 

 Sterilizer, 33 

 Still, 33 



Stimulus, 122, 126, 128, 133 

 Stomata, 72, 82 

 Stop-cocks, 68 



air-tight, 40 



Stoppers, glass, to remove, 43 

 Storage, TOO 



Student, characteristics, 13 

 Sunshine records, 80 

 Supply companies, 32 

 Systems of teaching, 7 



T 



Tables, 26, 32 



Teacher, characteristics, 12 

 Teaching Botanist, 9, 26 

 Teaching and learning. 12 

 Temperature-changes, 54 

 Temperature-stage, 36, 55, 56 

 Temperature in growth, no 

 Temperatures, table of, 47 

 Tendrils, 131 

 Tensions of tissues, 115. 

 Theories, nature, 20 

 Theoretical study, 21 

 Theorizing, 19, 20 

 Thermograph, 26, 33, 80 

 Thermometers, 36 

 Thermostat, 27, 141 

 Thermotropism, 132 

 Thigrnotropism, 131 

 Thread, non-hygroscopic, 43 

 Tightness of joints, 41 

 Time for course, 12 

 Tonic effects. 134 



