INDEX. 



581 



HABEBLAXUT. 



JTaberlandt, Dr., on the protube- 

 rance on the hypocotyl of Allium, 

 59 ; the importance of the arch 

 to seedling plants, 87 ; sub- 

 aerial and subterranean cotyle- 

 dons, 110, re. ; the ai-ohed hypo- 

 cotyl, 554 



Uaimatiixylon Campecliianum. noc- 

 turnal movement of leaves, 368, 

 369 



Hedi-ra helix, ciroumnutatiou of 

 stem, 207 



Hedysarum coronnnum, nocturnal 

 movements of leaves, 356 



Heliwithemum prosiratiim, geotro- 

 pic movement of flower-heads, 

 518 



Uelianthus annuus, circumnutation 

 of hypocotyl, 45 



, arching of hypocotyl, 90 



, nocturnal movement of coty- 

 ledons, 305 



Heliotropism, 5 ; uses of, 449 ; a, 

 modified form of circnmiiutution, 

 490 



Billeborus niger, mode of breaking 

 through the ground, 86 



Hensen, Prof., on roots in worm- 

 burrows, 72 



Henslow, Eev. Gr., on the coty- 

 ledons of i'halarii Canariensis, 

 62 



Hofmeister, on the curious move- 

 ment of Spirogyra, 3, 259, n. ; of 

 the leaves of Pistia straHufes, 

 255 ; of cotyledons at night, 297 ; 

 of petals, 414 



and Batalin on the movements 



of the cabbage, 229 



Hooker, Sir J., on the effect of light 

 on the pitchers of Sarracenia, 

 450 



Hypocotyl, 5 ; manner of break- 

 ing through the ground, 77 ; 

 emerges under the form of an 

 arch, 553 



Hypoeotyls and Epicotyls, cii-cum- 



nutation and other movementa 

 when arched.98; power of straight- 

 ening themselves, 100; rupture 

 of the seed-coats, 102-106 ; illus- 

 tration of, 106 ; circumnutation 

 when erect, 107 ; when in darlc 

 108 

 Hyponasty, 6, 267 



Iberis umheUata, movement of stem, 

 202. 



Ilium, nation, effect of, on the sleep 

 of leaves, 398 



Imatophyllum vel Clivia (sp. ?), 

 movement of leaves, 255 



Indigofera tinctoria, leaflets do- 

 pressed at night, 354 



Inheritance in plants, 407, 491 



Inseotivoious and climbing plants 

 not heliotiopic, 450 ; influence of 

 light on, 488 



Ipamcea bona nox, aroliing of hypo- 

 cotyl, 90 



, nocturnal position of coty- 

 ledons, 306, 312 



caerulea vel Pharbitis nil, 



circumnutation of seedlings, 

 47 



, movement of cotyledons, 47- 



49,109 

 , nocturnal movements of coty- 

 ledons, 305 



, sleep of leaves, 386 



, sensitiveness to light, 451 



, the hypocotyledonous stems 



heliotropic, 453 



, coccinea, position of cotv- 



ledons at night, 306, 312 



leptophylla, mode of breaking 



through tl-e ground, 83, 84 



, arching of the petioles of the 



cotyledons, 90 

 , difference in sensitiveness to 



gravitation in different part,s, 



509 

 , extraordinary manner of gar- 



mination, 557 



