INDEX 



577 



Liver, 47, 51, 83, 416. 



Living organisms, distinguishing ca- 

 pacities of, 75. 



Lizard, 37, 423, 425. 



Lobster, 326, 327. 



Locomotion, in Amoeba, 156, 158; in 

 crayfish, 328; in Euglena, 167, 168; 

 in frog, 18; in Hydra, 248, 262; 

 in Paramoecium, 177, 178. 



Locust, external features of, 344; 

 general activities of, 348, 349, 369; 

 internal organization of, 352; oc- 

 currence and distribution of, 343; 

 reproduction and life cycle of, 369; 

 sections of, 353, 357. 



Lotsy, Theory of hybridization of, 

 564. 



Loxodes, 189. 



Lubber grasshopper, 347, 344. 



Lumbricus, 283. 



Lungfish, 46, 63, 421. 



Lungs, 48, 62, 92, 94, 416. 



Lyell, 496, 544. 



L>Tnph, 41, 61, 145; hearts, 61; ves- 

 sels, 87. 



Lymph sinus, 40, 61; subcutaneous, 

 41; subvertebral, 47. 



Lymphatics, 41, 61, 87, 103, 104. 



Lymphocytes, 145, 146. 



Macrogamete, 174, 200. 



Macronucleus, 155, 178. 



Malacostraca, 332. 



Malarial parasite, 206, 385. 



Malayan fowl, 523, 526. 



Malpighian tubules, 354, 357. 



Maltase, 85. 



Mammaha, 11, 29, 37, 241; develop- 

 ment of, 433, 449; environment of, 

 28; evolution of, 530. 



Mammary gland, 433. 



Mammoth, 510. 



Man, development of, 449, 450, 451, 

 531; evolution of, 628, 529, 530, 

 531, 533. 



Mandibles, 323, 328, 346. 



Mast, 158. 



Mastigamoeba, 155, 174. 



Mastigophora, 154, 166, 241; colonial, 

 197; parasitic, 175. 



Maturation, 403, 474; divisions, 

 227, 403; significance of, 231; see 

 also Spermatogenesis and Oogene- 

 sis. 



Maupas, 188. 



Maxilla;, 328, 347. 



Maxillipeds, 327, 328. 



Mayfly, 373, 377, 378. 



Mecoptera, 375. 



Medulla oblongata, 65, 416; function 

 of, 118. 



Medusa, 276, 277. 



Melanoplus, 343, 344. 



Memory, 114, 319. 



Mendel, 462. 



MendeUan law of heredity, 6, 464, 

 471. 



Mesencephalon, 116, 119; see also 

 Optic lobes. 



Mesentery, 40, 48, 51. 



Mesoblastic somites, 429. 



Mesoderm, of chick, 427, 429; of 

 earthworm, 307, 308, 309; of frog, 

 405, 409, 417. 



Mesoglea, see Supporting lamella. 



Mesozoa, 237, 240, 241. 



Metabolism, 71, 75; of earthworm, 

 301; of Hydra, 260; of Protozoa, 

 159, 164, 170, 183, 192; summary 

 of, 103. 



Metagenesis, see Alternation of gen- 

 erations. 



Metameres, 282, 283, 312; see also 

 Somites. 



Metamerism, 244, 344. 



Metamorphosis, of frog, 23, 24, 419; 

 cf insects, 370. 



Metaphase, 139. 



Metazoa, cell cycle of, 213, 215; 

 classification of, 238, 240; vs. 

 Protozoa, 153, 195, 238. 



Metencephalon, 116, 119; see also 

 Cerebellum. 



Metridium, 279, 281. 



Microcentrum, 364, 865, 366, 373. 



Microgametes, 174, 200. 



