210 



BOTANY. 



Lords and ladies, 115, fig. 33. 

 Lousewort (Pedicular is), So. 



Maize, 19, fig. 3. 



Maple, fruit of, 171, fig. 52. 



Marchantia, 20. 



Marsh marigold, fruit of, 168. 



Medulla, 45. 



Medullary rays, 45. 



Melon leaf, 28, fig. 5 ; stem, 



section of, 47, fig. 15. 

 Metabolism, 88. 

 Metals in plant tissues, 55. 

 Metastasis, 88. 



Mistletoe (Viscum album], 80. 

 Monocotyledons, 44; characters 



of; i 80. 



Monoecious, 127. 

 Mother-cell of stoma, 39. 

 Multicellular plants, 13, 96. 

 Mushroom (Agaricus campestris), 



87. 

 Mutualism, 84. 



Natural orders of plants, 185. 

 Nile lily (Eichardia cethiopica), 



157. 



Nostoc, 1 1 6. 

 Nucleus, 32. 



Oospore, 123. 



Open bundles, 47. 



Origin of varieties, 17. 



Osmosis, 58. 



Ovary, 164. 



Ovule, 93. 



Oxlip, 136, fig. 39. 



Palisade-tissue, 62. 



j "Palms," 128; dwarf, 155, fig. 

 44 ; stem, section of, 43, fig. 13. 



Pansy (Viola tricolor), 149. 



Pappus, 53, 152. 



Parasites, 79. 



Parasitism, an acquired habit, 

 80; stages of, 80, Si. 



Passion-flower (Passiflora coe- 

 rulea), HI, fig. 32. 



Pea, pod of, 167, fig. 50. 



Peach, fruit of, 169, fig. 51. 



Perennial plants, 26. 



Perianth, 180. 



Periderm, 41. 



Permanent tissue, 44. 



Petals, 30. 



Petiole, 100. 



Phanerogams, 3 1 ; differentiation 

 in, 97. 



PJianerogamia, characters of, 173. 



Phloem, 44. 



Physical work, rays of light pro- 

 moting, 65. 



Pioneers of plant-life, 16. 



Pistil, 31. 



Pitcher-plant (Nepenthes graci- 

 fo'*).77 fig- 2 3 5 structure of 

 pitchers, 78. 



Pitted cells, 34. 



Plant nutrition, effect on atmo- 

 sphere, 71. 



Plants ben ding to wards the light, 

 66 ; bending away from the 

 light, 66. 



Pleurococcus, 12, fig. i. 



Pleurococcus viridis, 9. 



Pollen, 30; grains, 123; masses 

 in orchids, 141, fig. 41. 



