INDEX 771 



Galvanotropic response, 558 



Geolropic response, at inclinations of 45° and 135°, 500 



,, ,, effect of unilateral application of cold on, 504, 505 



,, ,, mechanics of, 495 



,, ,, method of recording, 499 



,, ,, of shoot and root, 544 



,, ,, torsional, 664 



,, ,, true character of, 502 



,, sensibility, localisation at root-tip, 539 

 Geotropism, differential, 663 



,, radial pressure and statolitliic theories of, 494 



Glow-response, 211 

 Grass-haulms, geotropic response of, 496, 508 



,, growth of, on klinostat, 509 



Greely, A. W. , galvanotaxis of /a;-a/;/rtr?a, 698 

 Growing organ and pulvinus, identical nature of responses in, 534 

 Growth, anodic and kathodic effect on, 556 



,, antagonistic action of acid and alkali on, 4S4 

 ,, apparent arrest of, at high temperature, 432 

 ,, balanced record of, 413 

 ,, daily periodicity in, 473, 474 

 ,, direct and indirect stimulus on, 438 

 ,, effect of acid on, 483 

 ,, ,, alcohol on, 482 



,, ,, alkali on, 483 



,, ,, carbonic acid on, 479 



,, ,, electric waves on, 618 



,, ,, ' electrification' of soil on, 560 



,, ,, ether on, 480 



,, ,, NaCl solution on, 485 



,, ,, Na.^Co^ solution on, 482 



,, ,, poisonous solution on, 486 



,, ,, sugar solution on, 482 



,, external stimulus on, 434, 435, 436 

 ,, laws of, 439 



,, o})posite effects on, of chemical agents on different ' constitutions,' 487 

 ,, ,, ,, of large and small doses, 488 



,, optimum temperature of, 448, 451 

 ,, ,, translocation of, 454 



,, periodic variation of rate of, 470, 473, 474 

 ,, polar action of current on, 557, 558, 559 

 ,, relation of, to hydrostatic pressure, 428 

 ,, ,, to tension, 432 



Growth-curvature, induction of, by electrical current, 553 



,, ,, by unilateral stimulus, 525, 527, 528, 529 



Growth-pulsation, multiple, 417, 432 



,, periodic groupings of, 417, 425 



Grow th, renewal of, by external stimulus, 425 



,, ,, by positive turgidity-variation, 426 



3 D2 



