INDEX. 



507 



Hymenium of sEcidium, 331 (fig. 118) ; 

 Agaricus, 336 (fig. 120) ; Anapty- 

 chia, 337 (fig. 121) ; Ascobolus, 

 328 ; Morcfalla, 326 (fig. 117) ; 

 Ruts ida, 333 (fig. 119). 



Hymenomycetes, 238, 327, 333. 



Hypanthium. See receptacular tube. 



Hyphse, 237, 238, 811. 



Hvpochlorin reaction, 248. 



Hypocotyl, 379 (fig. 139), 410 (fig. 149), 

 416, 420. 



Hypoderma, 106. 



ILLUMINATING apparatus. See con- 

 denser. 



Immersion objectives, xxv. 



Impatiens parviflora, bundle ends in, 

 200. 



Incumbent (of cotyledons), 410. 



Indehiscent, as a character of fruits, 

 425. 



Indian corn. See Zea Mais. 



- ink, use of, 267. 



India-rubber plant. See Ficus elastica. 

 Indusium, 354 (fig. 130A), 356. 

 Inflorescence, 371, 430. 

 Initial cells, initial layers, 142, 211, 



221. 

 Injury, as a factor in protoplasmic 



movements, 49. 

 Inoculation by bacteria, 285. 

 Insolation, effects of, on a leaf, 197. 

 Integument (ovular). See ovule. 

 Intercellular protoplasmic threads, 



457. 



spaces, 27. 



lysigenous, 102 ; schizogenous, 



27, 85 ; 118, 123, 124 ; canals, 180. 



Internodal cell, of Xitella, 245. 



Internode, 209, 245. 



Intine, 370, 381 = endospore. 



Inuline, reactions for, 69 ; sphsero- 

 crystals, 69 (fig. 25). 



Invertin, presence in pollen-grain, 392. 



Involucre (of mosses). See perichae- 

 tium. 



Involution forms (of bacteria), 268. 



Iodine, Arthur Meyer's, to prepare, 20. 



action on starch, 20, 52 ; on aleu- 



rone grains, 28 ; on amylodextrin, 

 134. 



in alcohol, use of, 21, 60. 



in glycerine, use of, 28, 33, 155. 



in potassium iodide, use of, 20, 28, 



52, 55, 65, 127, 134, 242, 260, 261, 

 276, 294, 305, 327, 329, 342. 



and sulphuric acid, reagent for 



cellulose, 65, 73, 243. 



- preparations. See also Appendix 



green, use of, 28, 29, 111. 

 acetic, use of, 306. 



i Iris, development of anther and pol- 

 len, 385. 



I florentina, structure of leaf, 80 et 

 seq. (fig. 28) ; crystals in leaf, 116 ; 

 endodermis of root, 166 (fig. 67) ; 

 vascular bundles of leaf, 114 (fig. 

 42) ; wax on leaf, 80, 99. 



germanica, leucoplasts in rhizome, 



59 (fig. 22). 



sibirica, pollen-tubes of, 392. 

 Iron alum, use of, 365. 



chloride, reagent for tannin, 71. 



oxide, in bacteria, 268. 



sulphate, reagent for tannin, 71. 

 Isolated vascular bundles, 101. 

 Isolation of tissue elements by macera- 

 tion, 158. 



Ivy. See Hedera Helix. 



Jodococcus vulgaris, 276. 

 Juglans regia, leaf -fall of, 203. 



KABYOKINESIS, 438. 



Knop's nutrient solution, 251, 295. 



Koch's culture methods for bacteria,. 



283. 



LABELLING preparations, 31. 

 Laburnum. See Cytisus Laburnum. 

 Laevulose. See glucose. 

 I Lamellae (of Hymenomycetes), 333. 

 i (of Polytrichum), 346. 

 Lamium, protoplasmic movements, 47- 

 Larkspur. See Delphinium. 

 Latex system, in EupJwrbia, 19, 125 ; 

 Chelidonium majus, 124 ; Scorzo- 

 nera, 125 (fig. 46). 

 Lathyrus, formation of pollen-tubes,. 



392. 



! Leaf, influence of light on structure, 

 197 ; physiological anatomy, 197-8. 



structure of, in Alo? t 87 (fig- 



31); Fagus sylvatica, 195 (fig, 

 77) ; Helleborus, 194 ; Iris, 80 (fig. 

 28), 114 (fig. 42); Mniian undu- 

 latum, 230; Ritta graveolens, 189 

 (figs. 75, 76) ; Scolopendrium vul- 

 gare, 355 (fig. 130); Sphagnum 

 ac nt i folium, 232 ; Syringa vul- 

 garis, 194. See also epidermis. 



origin of, 205, 212 ; fall of, 201. 



tissues of, physiologically con- 



sidered, 197. 



traces, 119, 214, 218. 



vascular bundle ends, 199 (fig. 78). 

 Leaves, coloured, 58. 



Leitz's microscopes, xxii,6 ; dissecting- 



stand, 206 (fig. 79). 

 Lemna, root-tip of, 219. 

 Lemon. See Citrus. 



oil of, use of, 388, 390. 

 Length of tracheae, 161. 



