628 



INDEX 



disintegration of, 174, 175 ; importance 

 and properties of, 163 ; influence of, on 

 distribution of plants, 438, sec. 76 ; 

 nutritive solution in, 170; retention of 

 water by, 168. 



Sofa, 401, 464. 



Solanaceae, ringing experiments on, 578. 



Sorauer, 436. 



Sorbite, 477. 



Sorel, 564. ' 



Spanjer, 279. 



Sparmannia.) 243. 



Spartium jioic<:iii, 247. 



Spatzier, 494. 



Specific photosynthetic activity, 357 ; - - re- 

 spiratory activity, 524. 



Spencer, 9 ; physiological units of, 49, 57. 

 - le Moore, 358. 



Sphaerocrystals, 73. 



Spirillum, as test for oxygen, 312 ; S. 

 cholerae-asiaticae, 532; S. desulfuri- 

 cans, 531, 540; S. rttbruin, 318; in- 

 fluence of oxygen on pigment-forma- 

 tion in, 497 ; S. unditla, sensitiveness 

 of, to absence of oxygen, 537. 



Spirogyra, 307, 312, Fig. 45, 321, 325, | 

 342, 345,_ 411, 415, 429; changes of 

 turgidity in, 143; influence of chlorides 

 on production of tannin by, 492; --of 

 deficiency of calcium on, 424 ; passive 

 secretion of methyl-blue by, 94 ; se'nsi- 

 tiveness to copper salts, 121. 



Splachmnn, 379. 



Spongioles, 152. 



Spongioplasm, 48. 



Sprengel, 172, 413, 418; importance of 

 organic acids, 489 ; withdrawal of ash 

 from old organs, 588. 



Ssurosh, 360. 



Stachyose, 474. 



Stachys luberifera, 604. 



Stadler, 284. 



Stahl, 158, 181, 182, 188, 191-4, 198,234,235, 

 239, 240, 243, 247, 275, 277, 323, 330, 

 360, 436, 495 ; on acid secretions, 

 130 ; closure of stomata in winter, 190; 

 cobalt method, 242 ; calcareous de- 

 posits, 133; protective function of cal- 

 cium oxalate, 486 ; on tannin, 492. 



Stange, 323, 421, 455; examples of turgid 

 pressure, 139; influence of concen- 

 trated media, 140. 



Starch, conditions for formation of, 318, 319, 

 Pigs. 48, 49 ; percentage of, present in 

 plants, 473 ; rapidity of production of, 

 320 ; soluble form of, 474. 

 formation, substances capable of in- 

 ducing, 326 ; concentration necessary, 

 326. 



- grains, 473 ; swelling and molecular 

 constitution of, 80. 



Starch-trees, 512, 603. 



Steapsin, 508. 



Stein, 379. 



Steinbrinck, 72 ; ' iieberquellung,' 81. 



Steinmetz, 560. 



Stenstrom, 231, 240. 



Stephan, on rapidity of diffusion, 126. 



Stereoisomers, nutritive value of, 387. 



Stich, 310, 524, 525, 538, 539, 542 ; influence 

 of injuries on respiration, 565. 



Stichococcus, 411. 



Stimuli, autonomous and inductive, II ; 

 conjoint action of, 19; nature of, 13; 

 trophic, ii. 



Stipa pennafa, hygroscopic awns of, 161. 



Stohmann, 155, 363, 419, 433. 



Stoklasa, 428, 438 ; on lecithin, 63. 



Stomata, abundance of, 195 ; occlusion of, 

 190; communications of, 196; experi- 

 ments with, 197, Figs. 22, 23 ; distribu- 

 tion of, 189 ; closure of, 190; influence 

 of epidermal cells on movements of, 

 191 ; - of light, 194 ; - of induction 

 shocks, 194 ; mechanism of movements 

 of, 192; non-closing, 191. 



Storage receptacles, depletion of, 590, 591. 



Strasburger, 40, 41,183,1^6-8, 211-7,222-7, 

 232, 256, 258, 260, 272, 273, 435, 480, 

 539. 574, 578, 581, 591 ; absence of 

 streaming in sieve-tubes, 126; centro- 

 somes, 47 ; duramen, 484 ; granulo- 

 plasm, 48 ; importance of anatomical 

 arrangement of xylem, 217; influence 

 of injection on conductivity of dead 

 wood, 221 ; kinoplasm, 48 ; mitosis, 

 55) 56, 58; multi-nucleate cells, 60; 

 negative pressure in vessels, 202, 203 ; 

 molecular structure, 79 ; transference 

 of water through dead stems, 220; tro- 

 phoplasm, 48 ; use of eosin, 219. 



Stratification, bearing of, on molecular struc- 

 ture, 78. 



Strelitsia, 320. 



Striation, bearing of, on molecular structure, 

 7 8. 



Strychnos tiu.v votnica, 498. 



Stutzer, 327, 397-9, 490; alkalinity in sand- 

 cultures, 132. 

 - u. Hartleb, 362. 



Suberization, 482. 



Substitution of essential elements, 411-3. 



Sugar, nutritive value of, for fungi, 384. 



Sullivan and Thompson, on invertin, 502. 



Sulphur, importance and occurrence of, 

 429 ; oxidation of, 429 ; sources of, 

 414, 429. 



Surface tension energy, importance of, in 

 imbibition, 73. 



Symbiosis, conjunctive, 364 ; disjunctive, 

 365 ; intracellular, 32. 



Syniphytum, 478. 



Symplasts, 60. 



Synanthrin, 476 



Syriiiga, 464 ; S. vulgaris, transpiratory 

 activity of, 244. 



