290 



INDEX. 



Reproduction, Chapter VII., pp. 

 254-283 ; chief end, 257, 258 ; defi- 

 nition, 257; modes, 259; sexual, 

 259, 271, 272, 275-279; non-sex- 

 ual, 259, 277-279; precautions to 

 secure, 261; vegetative, 261-263; 

 influence of environment, 263- 

 276 ; stimuli determining mode in 

 Vaucheria, 264-266, 275; in Hy- 

 drodictyon, 266-268; in Stigeodo- 

 nium, 268, 269; influence of os- 

 motic pressure, 268, 269; stimuli 

 affecting reproduction in flower- 

 ing plants, 269-275; in Mimulus 

 Tilingi, 270-273; in Viola odo- 

 rata, 274, 275 ; in Equisetum, 276 ; 

 in Sequoia, 277 



Resin, 126 



Respiration, Chapter II., pp. 12-39; 

 definition, 13; rates at different 

 times, 15; regulated by proto- 

 plasm, 16; reduction of, 16; sus- 

 pension, 16; object, 16; yield in 

 energy, 17, 22; substances con- 

 cerned, 17, 18; products, 18; 

 characteristic product, 21; heat 

 of combustion of sugar, 22, 23-; 

 heat of alcoholic fermentation^ 

 23, 24; of butyric, 24; of acetic, 

 24; of combustion of alcohol, 24; 

 relation of enzymes to respiration, 

 19, 29, 30, 33 ; optimum temper- 

 ature, etc., 37; effect of injuries, 

 37, 38 ; rate in relation to growth, 

 etc., 38; ratio of O 2 to CO 2 , 38; 

 variation in ratio, 38, 39 ; amounts 

 of CO a given off, 39; effective- 

 ness of bacteria, 39; summary, 

 39. See Fermentation, Intramo- 

 lecular respiration 



Response to stimuli, see Geotropism, 

 Irritability, etc. 



Rheotaxis, 190 



Rheotropism, 189 



Roots, 113; corrosive action, 125; 

 early growth in spring, 194; geo- 

 tropism of, 198-206 ; heliotropism, 



214; thermotropism, 221; hydro- 

 tropism, 224 ; chemotropism, 231 ; 

 galvanotropism, 239 ; thigmotrop- 

 ism, 247 



Root-hairs, 114, 115 

 Root-pressure, see Sap-pressure 

 Root-tubercles, occurrence, 72; struc- 

 ture, 74; contents, 74; mode of 

 infection, 75; bacteria parasitic 

 in, 76 ; fix free N, 75 



Salt, 93, 227, 228 



Salt plants, see Halophytes, 94, 95 



Sap, composition of maple, 132 



Sap-flow, 132, 133, 136 



Sap-pressure, distinction from turgor 

 pressure, 131; figures, 135, 136; 

 relation to ascent of water, 120, 

 127, 131, 133; "root-pressure," 

 135 



SAKHACENIA, 84 



Sea-water, 94, 95, 197 



Secretion, 125-130 



Seeds, respiration in air-dry, 9; dur- 

 ation of vitality, 10 



Selective power of roots, etc., 112, 

 113 



"Sensitive plant," see MIMOSA 



SEQUOIA, reproduction, 277 



Sexual reproduction, see Reproduc- 

 tion ; necessary?, 276-279; in in- 

 fusoria, 279; in diatoms, 279 



Sieve-tubes, 157-159 



Silica, 93 



Soil, comparison of, in Eastern and 

 Western States, 11 



Soil water, 104, 105 



Span of life, how limited, 254-256 



"Spring wood," 123, 191-194 



Staining living protoplasm, 107 



Stamens, sensitive to contact, 251 



Starch, proportional and structural 

 formulae, 59; possible mode of 

 formation, 61, 62; translocation, 

 63, 64, 99; in sieve-tubes, 158; 

 storage, 160 



