630 



INDEX 



Microtome, 139 



Microzooid, 250, 275 



Mid-brain, 202, 589 



Mid-gut, 371 



Milk-glands, see Glands 



Milk-teeth, 510 



Milt, see Spermatic substance 



Mitosis, 563 



Molars, 509 



Mollusca, 220, 411 



MONADS : occurrence ana gene- 

 ral characters, 256 ; move- 

 ments, 256 ; nutrition, 256 ; 

 animals or plants ? 258 ; 

 rapid multiplication, 289 ; 

 practical directions, 260 



MONOCYSTIS : occurrence, 284 ; 

 structure, 286 ; parasitic nu- 

 trition, 286 ; conjugation and 

 reproduction, 286, 287 ; en- 

 cystation and spore-forma- 

 tion, 285, 286 ; means of 

 dispersal, 287 ; practical 

 directions, 293 



Mortoecious, 307 



Morphology, 217 



Morula, see Polyplast 



Mosquito, 288 



Mother of pearl, see Nacre 



Mounting sections, directions 

 for, 139 



Mouth, 4, 16, 253, 265, 271, 295, 

 311, 314, 370, 401, 421, 431, 

 486 



Mouth-cavity, see Buccal cavity 



Movement, spontaneous, volun- 

 tary, and involuntary, 7, n, 

 112, 172, 232, 319, 327, 433 ; 

 and see under various types 



Mucous membrane, 17 



Mule, see Hybrid, 216 



Miillerian duct, 603 



Multinucleate, 113, 281 



Muscle-fibres : striped, 112 ; un- 

 striped, in, 131, 132 ; and 

 see under various types 



Muscle-plate, 580 



Muscle-processes, 298, 304, 311 



3 l8 

 Muscles : Frog, 18, 57, 59, 63, 



205 ; Obelia, 311 ; Earth- 

 worm, 329 ; Crayfish, 369 ; 

 Mussel, 399, 400 ; Lancelot, 

 419 ; Dosfish, 434 ; Rabbit, 

 505 ; and see Myomere 



Muscles : of eye, 186, 465, 534 ; 

 of middle ear, 536 



Muscles, papillary, 521 



Muscular contraction, 60, m, 



273 



Muscular impressions on shell, 

 399 



Muscular layers of enteric canal, 

 70, 75, 131, 132 



Muscular system, see under 

 various types ; development 

 of, in Vertebrates, 203, 588, 

 604 



Muscularis mucosse, 133 



MUSSEL : general characters, 

 396 ; 412 ; mantle, shell, and 

 foot, 396, 397, 412 ; food- 

 current, 404, 412 ; gills, 397, 

 401, 414 ; muscles, 399, 400, 

 413 ; enteric canal, 401, 416 ; 

 nephridia, 406, 415 ; blood- 

 system, 407, 414 ; nervous 

 system, 408, 415 ; sense- 

 organs, 409 ; 416 ; gonads, 

 409, 417 ', development and 

 metamorphosis, 410, 415, 581 



Mustelus, 431, 469 



Myocomma, 434 



Myomere, 203, 369, 419, 423, 

 434. 588 



N 



Nacre : nacreous layer, 399 

 Nasal organ, see Olfactory 

 Naso-lacrymal duct, 186, 535 

 Naso-palatine canals, see Canals 



Naso-pharynx, 512 

 Natural History, > 

 Natural selection, 227 

 Nauplius, 384 

 Navrl, 597, 613 

 Navicular bone, 505 

 Neck, 484 



