840 
Mesosma (of scorpion) 
Mesosternum 
Mesozoa . 
Metabola  . . 
Metabolism . . 
Metacarpals . . 
Metacoracoid 
Metacromion - 
Metagenesis, or alteration of 
generations 
Metagnatha . 
Metakinesis . ‘ . 
Metamorphosis of — 
*3 Anodonta 
si Crustacea 
93 Echinoderma 
35 frog . 
43 Insects * * 
‘a lamprey . 
Tunicata . 
Metanephros . . 
Metapleural fold . . 
Metapterygium . F 
Metasoma (scorpion) . 
Metatarsals .' . ‘ 
Metatheria . 
Metazoa . a 
»» and Protozoa . 
Metencephalon . 
Microchiroptera 
“Microhydra . 
-Microlestes . 
“Micromere 
Micronucleus 
Micropyle 
Microstoma . 
‘Microzooids . a 
Midas . ‘ 
Midge . : . 
Mid-gut = Mesenteron 7 
Migration of Birds . 
Milk . ‘i . 
Millepora . 
Millipedes . 
Milt . 
Miracidium , ‘. 
Mites . ‘ 
Mitosis , 
Moa . 
Modes of inheritance ‘ 
INDEX 
PAGE 
Modification 4 » 74, 810 
Moina . . ‘i 5 + 301 
Molars. : F ‘ « 923 
Mole . i é ‘i . 781 
Mollusca, ‘i - 380 
55 classification of . 416 
iis general characters of 380 
‘9 shell of . c + 415 
Molluscoidea 7 . » 248 
Moloch i . . . 629 
Monachus ‘ F 779 
Monaxonida . 133 
Monera ‘ . 114 
Monitor . . ri 629 
Monkeys . ‘ : 787 
Monocystis . . . 100 
Monodon % 770 
Monomeniscous eyes 344 
Monostomum ‘ 190 
Monotremata F 740 
Moose . 7 ‘ ‘ - 758 
Morphology . i F - 34 
Morse . F S . » 97g 
Morula ‘ : ‘ . 67 
Moschus. F : - 758 
Mosquito . 7 359 
Mother of pearl . . 415 
Moths . . . 360 
Moulting of birds . . 679 
ay of cuticle of cray- 
fish +. 282 
Mouth origin of Vertebrate - 498 
Mucous canals of skate. 532 
x» glands of Myxine 517 
3 » of snail. 301 
Mud fishes . : 573 
» line. : j 802 
Miillerian duct. : 51 
Multiple conjugation 117 
Multituberculata . 738 
Murex . , ‘ , 423 
Mus . ‘ > 972 
Muscle, contraction of . » 42 
» fibres 26, 42 
»» smooth 26, 42 
», striped . ‘ 26, 42 
Muscular activity in Animals 26 
Muscular system of— 
4 Amphioxus . 464 
5 Anodonta . 395 
