GLOSSARIAL INDEX. 



Hilum (hilum, a little thing), 48. 

 Hohnel's tests for lignin, 10, 14. 

 Homogeneous pith, 124. 

 Honey of flower, 451. 

 Hot springs, occurrence of plants in, 205. 

 Hoyer's mounting-media, 23. 

 Humus, 337, n. 

 Humus-plants, 337. 

 Humus soils, 239. 



Hybridization, 447, 455; reciprocal, 455. 

 Hybrids, 455; derivative, 458; produc- 

 tion of artificial, 453; strength of, 458; 



tendency of, to vary, 458. 

 Hydrochloric acid (HC1), 12; diffusion 



of, 223; used in the examination of 



chlorophyll granules, 12, 290; used 



in the examination of plant-crystals, 



54. 



Hydrostatic water, 242. 

 Hydrotropism (v&up, water; rpoww, a 



turn), 393. 

 Hygroscopic ity (i>yp6<, wet; <<,.*, I 



look at), 239. 



Hygroscopic movements, 399. 

 Hygroscopic water, 242. 

 Hypochlorin (vv6\\a>po^, greenish yel- 



"low), 290, 322. 

 Hypocotyl (i>ird, under; OTI>AT), a cup). 



See Caulicle. 

 Hypoderma (iuro, under; Sip^a, the skin), 



119. 

 Hyponastic curvature (i>iro, under; pcurrot, 



close-pressed), 408. 

 Hysterogenic intercellular spaces (u<rr- 



po, after; ytwau, I produce), 99, n. 



IDIOBLASTS (Mio, peculiar; 



offshoot), 69, n., 97. 

 Inclination of the wood elements to the 



axes of trees, 143. 

 Individual, 425. 



Indol (C I6 H, 4 N,), use of, as a test for lig- 

 nin, 13, 37. 

 Inferior ovaries, arrangement of fibro- 



vascular bundles in, 174. 

 Initial cells, 105. 

 Injuries, of the stem, 149; to the plant, 



470. 

 Insectivorous plants, 338 ; list of works 



relating to, 351. 

 Integuments of the seed, 178. 

 Intercellular spaces, 60, 99 ; modes of 



development of, 99; occurrence of 



protoplasm in, 217. 

 Intermediate zone, 134. 

 Internal glands, 100. 



Internodes, characteristics of growing, 

 390; movement in twining plants of 

 young, 406. 



Interstices, 100. 



Intextine, 428, . 



Intine (intus, within), 428. 



Intramolecular respiration, 370. 



Intussusception theory regarding mode 

 of growth of the cell-wall (intus with- 

 in; msceptio, a taking up), 219. 



Inulin (CeHioOs), composition of, 51; oc- 

 currence of, in plants, 358; tests for, 

 12, 50. 



Inverted sugar, 359. 



Iodine, action of light on solutions of, 

 9; action of, upon callus, 93; occur- 

 rence of, in plants, 256; solubility of, 

 8 ; as a test for cellulose, 8 ; as a test 

 for starch, 8. 



Ipomoea, experiments upon fertilization 

 of, 448. 



Iron, necessary for development of chlo- 

 rophyll granules, 254, 297 ; occurrence 

 of, in ash of plants, 247; occurrence 

 of, in plants, 254. 



Isodiametric cells (Zeros, equal; , 

 through; n&pov, measure), 60. 



KARYOKINESIS (xapuov, kernel ; KU/O, I 

 change), a term used to designate the 

 series of changes which the nucleus 

 goes through in cell-division. 



Kinetic energy (KIVO, I move), 307. 



Knot, 154. 



Kraus's process for extraction of the 

 chlorophyll pigment, 291. 



Kyanizing, 142. 



Kyanophyll (KUOVOS, dark blue; 4>uAAoi<, 

 'leaf), 291. 



LABURNUM, continuity of protoplasm in 



cells of cortex of, 215. 

 Lactuca Scariola, structure of leaves of, 



160. 



Lacunae (lacuna, a cavity), 100. 

 Latex, 96. 

 Latex-cells, 94. 



Latex-tubes. See Latex-cells. 

 Laurel-camphor (C 10 H 16 0), 363. 

 Layering, 444. 



Lead, occurrence of, in plants, 256. 

 Leaf-trace, 131, n. 

 Leaves, absorption of ammonia by, 332, 



341 ; absorption of aqueous vapor by, 



283; adaptations of, to climate, 280; 



