490 



GLOSSAKIAL IKDEX. 



alterations in the color of, when ex- 

 posed to bright light, 296; ash-con- 

 stituents of autumn and spring, com- 

 pared, 281 ; autumnal colors of, 297 ; 

 buds on, 162; chlorophyll in evergreen, 

 2i)8; development of, 155; epidermis 

 of, 161; exogenous structures, 155; 

 fall of, 162; iibrn-vascular bundles 

 in, 156; glands of, 161; growth of, 

 156; midrib of, 157; of mosses, 164; 

 of submerged phsenogams, 161; pa- 

 renchyma of, 158; quality of light 

 which penetrates, 309 ; relation of age 

 of, to transpiration, 279; roots pro- 

 duced from, 162; sensitiveness of, 419; 

 transpiration from opposite sides of, 

 274. 



Legumin, 363 ; compared with asparagin, 

 365. 



Lenticels (hvticula, a freckle), 151. 



Leucites. Bee Leucoplastids. 



Leucoplastids (Aevrcd?, white; irAaa-tmi, 

 I form), 41, 43, 287 ; detection of, 44. 



Lianes, 138. 



Liber-fibres. See Bast-fibres. 



Libriform fibres, 80, 143. 



Lichenin (OoHijOs), 358. 



Life of tlie plant, forms of the, 470. 



Light, amplitude of waves of, 306 ; classi- 

 fication of rays of, 308; depth to 

 which green tissues are penetrated 

 by, 309 ; effect of absence of, upon 

 plants, 388; effect of, upon the move- 

 ments of twining-plants, 407; effect 

 of, upon opening and closing of sto- 

 mata, 270; effect of, upon protoplas- 

 mic movements, 206; effect of, upon 

 transpiration, 277; effect of too in- 

 tense, upon plants, 473; influence of, 

 upon germination, 466; influence of, 

 upon respiration, 369; influence of, 

 upon the structure of leaves, 160; 

 intensity of, 306; length of waves of, 



306, n.; nature of, 306; quality of 

 the, penetrating leaves, 309; relations 

 of growth to, 387, 392; relations of the 

 various kinds of, to assimilation, 305, 



307, 309, 310, 312, 316; use of, in 

 microscope work, 2. 



Lightning, effect of, upon trees, 477. 

 Lignification {lignum, wood; facio, I 



make), 34, 36. 62. 

 Lignin, composition of, 36; solubility of, 



36, ra., 37; tests for, 10, 11, 13, 14, 



37. 

 Lignir^ose, 37, n. 

 Lignone, 36, ». 



Lignose, 36, n. 



Ligules (ligula, a little tongue), arrange- 

 ment of tibro-vasculiir bundles in, 

 158. 



Lithium used in the determination of the 

 rate of transfer of water through the 

 plant, 260. 



Lithocysts (Aiflos, a stone; kvhtis, blad- 

 der). See Crystal-cells. 



Living parts of a plant, 195. 



Locomotion, 397. 



Luminous rays of the spectrum, 308. 



Lycopodiaceae, stems of, 154. 



Lysigenic development (Aiiirw, a parting j 

 yemiut, I produce), 99, n. 



Maceration, 7, 12, 14, 77, re., 80. 



Macrocytis pyrifera, size of, 188. 



Macrospore, 443, /*. 



Magenta, 19. 



Magnesium, occurrence of, ill plant-ash, 

 247 ; office of, in the plant, 253. 



Malic acid (C4HUO6), occurrence of, in 

 plants, 360. 



Mflltin, 468. 



Malting, 467. 



Manganese, occurrence of, in plants, 256. 



Manures, 334. 



Markings, annular, 30, 85; discoid, 30, 

 82; of tje cell-wall, 29; reticulated, 

 30, 85 ; scalariform, 84 ; spiral, 30, 84. 



Maskenlack, 24. 



Measurement, of the amount of assimi- 

 lation, 312; of growth, 383; of micro- 

 scopic objects, 3 ; of transpiration, 271 ; 

 unit of, in microscope work, 4. 



Mechanical elements, distribution of, in 

 dicotyledons, 193; distribution of, in 

 monocotyledons, 191. 



Mechanical injuries, effect of, upon 

 plants, 476. 



Mechanical irritation, effect of, upon 

 protoplasmic movements. 208; effect 

 of, upon transpiration, 278. 



Mechanics of tissues, 188. 



Media, for examination of microscopic 

 objects, 4 ; mounting or preservative, 

 20. 



Medullarv rays (medulla, the pith), 61, 

 114, 124. 



Medullary sheath, the primarj' xylem 

 bundles projecting into the pith from 

 the cambium-ring. 



Member, a term employed to designate 

 any part of a plant when it is treated 

 with reference to position and struc- 



