GLOSSAEIAL INDEX. 



491 



ture but not with reference to func- 

 tion. 



Membranogenic substances (membrana, 

 a membrane ; yivfiv, to be born), 227, n. 



Mercuric chloride (HgCU), 13; solution 

 of, for treatment of protein granules, 

 45. 



Mercury, occurrence of, in plants, 256. 



Me'rismatic (meristematic ) tissue. See 

 Meristem. 



Meristem (fiepwrrw, divisible), 59, 105. 



Mesophyll (jxe<ro, middle; <f>v\\ov, a 

 leaf), the fundamental tissue of the 

 leaf. 



Mestom, 191. 



Metacellulose, 35, n. 



Metals found in plants, 247, 255. 



Metaplasm (^eri, in the midst of ; wAao-^a, 

 that which is formed), the name given 

 by Haustein to the granular substances 

 mingled with protoplasm. 



Methyl-green, 19, 380. 



Metastasis (pcroffraroi a removing). 

 See Transmutation. 



Methyl-violet " BBBBBB," 19. 



MicefhE, 212, 257, 393; attractions of, 

 212, 218. 



Micrometer, 3. 



Micro-millimeter, 4. 



Micropyle (fxncpov, small; mA>7, orifice), 

 433. 



Microscope, 1. 



Microsomata (fu*p<k, small ; wno., body), 

 211. 



Micro^pectroscope, 292. 



Microspore, 443, n. 



Microtome, use of the, in section-cut- 

 ting, 3. 



Mikroskopirlack, 24. 



Milk-sacs, 99. 



Millon's reagent (Acid Nitrate of Mer- 

 cury), 13, 28, 33. 



Mimosa pudica, 420. 



Mineralization, 34, 39. 



Mirror of microscope, 2. 



Modifications of the cell-wall, 34. 



Moisture, effect of amount of, in the air 

 upon transpiration, 276; effect of 

 forests upon the amount of, in the 

 air, 281; effect of. upon the direction 

 of growth, 393; exhalation of, by 

 desert plants, 276; relations of proto- 

 plasm to, 209; relations of soils to, 

 239. See also Water. 



Molecule, 212, n. 



Monocotyledons, distribution of mechan- 

 ical elements in, 191; secondary struc- 



ture of stems of, 135; stems of, 129; 

 tvpes of stems of, 133. 



Morphia (C n HNOi + H 2 0), 327, 365, 

 476. 



Mosses, absorbing organs in, 117; aid 

 the soil in retention of water, 282; 

 leaves of, 164; reproduction in, 441, .; 

 stems of, 154. 



Mother cells, of pollen, 171, 379; of sto- 

 mata, 72, 376. 



Mounting-media, 20. 



Movements, cause of autonomic, nu 

 fully known, 414; due to changes in 

 structure during ripening of fruits, 

 400; hygroscopic, 399; of ciliated 

 structures, 398; of Desmids, 398; of 

 Diatoms, 398; of leaves, 419 ; of proto- 

 plasm, 199 r 398; of seedlings, 403; of 

 the Telegraph plant, 413; of tendrils, 

 409, 417; of twining plants, 405; of 

 young parts of mature plants, 405; 

 revolving, 400; sleep, 409; sleep, of 

 cotyledons, 411; sleep, of floral or- 

 gans, 412; spontaneous, 413; utility 

 of sleep, 411. 



Mucedin, 364. 



Mucilage, conversion of the cell-wall 

 into, 34; in the cell-sap, 51; solubility 

 of vegetable, 33. 



Mucilage-cells, 99. 



Mucilaginous modification of paren- 

 chyma cells, 63. 



Mucus, 220. 



Mulder's hypothesis concerning the ort- 

 gin of albuminoids, 326, n. 



Multiple epidermis. 67. 



Myxomycetes, 196, 414. 



NAEGKLI'S HYPOTHESIS concerning the 

 structure of organized bodies, 212. 



Nascent tissue (nasceiw, arising). See 

 Meristem. 



Natural grafts, 152. 



Nectar, 451; protection of, from the 

 visits of unwelcome insects, 455 ; secre- 

 tion of, 452; specific gravity of, 452. 



Nectar-glands, 161, 451. 



Nectar guides or spots, 453. 



Nectaries, 452. 



Negative geotropism, 392. 



Negative heliotropism, 393. 



Nepenthes, 349. 



Nervation of seed-coats, 180. 



Nerves of leaves, 156. 



Nickel, occurrence of, in plants, 256. 



Niggl's test for lignin, 13. 



