INDEX 



55 1 



Mastigophora (Flagellates), 187-189. 



Mastodon, 425, 426; M. ameri- 

 canus, 427. 



Matter, 3 ; inorganic and organic, 

 7; living substance, 5-12; see 

 also Life. 



Matthew, W. D., 156, 372. 



Maturation, 64, 65. 



May flies ; see Odonata. 



Mecaptera (Panorpatse), 274. 



Medulla oblongata, 336. 



Medusae, 212. 



Megachile, 296, 297. 



Megilla, 276. 



Meister, Joseph, 487. 



Melander, A. L., 279. 



Melicerta, 236. 



Melipona, 297. 



Melissodes, 85. 



Memory, 29. 



Mendel, Gregor Johan, 41-50; early 

 life, 41 ; priesthood, 41 ; teacher, 

 41; scientific interest, 42; work 

 with peas, 42-45 ; death, 49 ; see 

 also Mendelism. 



Mendelism, 42-50, 51, 57, 117, 133; 

 applications of, 49-50; characters 

 in inheritance, 44-45 ; cytology 

 vs., 50; determiners, 45-46; domi- 

 nant and recessive strains, 44-45 ; 

 formulae, 45, 46, 47, 48; hybridiza- 

 tion, 42-44; inheritance, 46-48; 

 "Three-to-one" ratio, 45; see also 

 Mendel ; Red Sunflower (Helian- 

 thus). 



Mental defectives, 121. 



Merriam, C. H., 454, 455, 456. 



Merychippus, 418. 



Mesoblast (Mesoderm), 210, 329. 



Mesoderm (Mesoblast), 210, 329. 



Mesoglcea, 210. 



Mesohippus, 418. 



Mesophytic vegetation, 457. 



Mesozoic Era, 140, 148, 151, 152, 154, 

 222, 348, 365, 366, 380, 396, 432. 



Metabolism, 18-19; anabolism and 

 katabolism, 18, 34; assimilation 

 of food, 19-21; excretions and 

 secretions, 20. 



Metacarpals, 332. 



Metamorphosis, 267, 269, 272, 274, 



275, 276, 277, 278, 357, 358. 

 Metaphysics, 535. 

 Metapsychics, 536. 

 Metatarsals, 334. 

 Metazoa, 180, 210. 

 Microlepidoptera, 289. 

 Miller, G. S., 441. 

 Mimicry, 291; Batesian m., 291; 



Miillerian m., 291. 

 Miocene Epoch, 148, 155, 157, 162, 



163, 418, 425, 427. 

 Mississippian Period, 148, 150. 

 Mitosis, 65. 

 Moa ; see Dinornis. 

 Modern Era, 148. 

 Mceritherium, 425, 427. 

 Moisture vs. life, 455. 

 Molds, slime, 189. 

 Molecule, 6, 14, 37. 

 Mollusca, 182, 225, 239, 243-252; 



see Amphineura ; Cephalopoda ; 



Gastropoda ; Lamellibranchiata. 

 Momotus, 377. 

 Mongoose ; see Viverridae. 

 Monotremata, 396. 

 Monstrosities, 38. 

 Montanian Epoch, 148. 

 Moore, Anne, 121. 

 Moore, J. P., 242. 

 Moquin-Tandon, 282. 

 Morgan, T. H., 69, 84, 86, 87. 

 Morse, 516. 

 Mortality, infant, 534. 

 Mosquitoes (Nematocera), 278. 

 Moths ; see Lepidoptera. 

 Moulting, 376-377- 

 Movement, 33. 

 Muller, Fritz, 292, 293 ; Miillerian 



mimicry, 291. 

 Murex, 247. 

 Murray, 478. 

 Muscles, 27-28; contractions of, 33; 



functions of, 27; striated and un- 



striated m. cells, 27; structure of, 



27-28. 

 Mustelidae, 401, 403 ; Mustela ni- 



gripes, 403. 



