INDEX 



929 



:>I ESENCEPH ALON, mes'ensef 'alon, 

 (G. m,esos, middle -f- en, in -(- kep- 

 hale, head) 472 



M K S E N C H Y M E, mess'enkime (G. 

 mcsos, middle; enchyma, in a fluid). 247 



Definition of 259 



Formation of 461 



M E SEN T E RIC, mess'entare'ik (G. 

 mcsos, middle; enteron, gut) 532 



MESENTERIES, definition of 537 



MESENTERIES IN HYDRA 



Definition of 256 



MESENTERON 320 



MESENTERY, mes'entarey (G. mesos, 

 middle; enteron, gut) 47, ^9 



MESOBLASTIC BANDS, mesoblas'tik 

 (G. mesos + blastos, bud), defini- 

 tion of 279 



MESOCARDIA, definition of 529, 604 



MESOCARDIUM, meVokar'dium (G. 

 mesos -f- kardia, heart ) , definition 

 of 470, 776 



MESOCOELE, mes'osel (G. mesos + 

 koilos, hollow), definition of 511 



MESOCOLON, mes'oko'ldn (G. mesos 

 + kolon, large intestine), defini- 

 tion of 537 



MESODERM, mess'ohderm (G. mesos, 

 middle ; derma, skin ) , definition of . 



107, 724 



Origin of in chick 456 



MESOGASTER, mess'ohgas'ter ( G. 

 mesos, middle ; gaster, stomach ) , 

 definition of 537 



MESOGASTRIUM, definition of 745 



MESOGLEA, mes'ogle'a (G. mesos + 

 gloia, glue), definition of 247 



MEKOGONIMU8 HETEROPHYES 293 



MESOHEPATICUM (G. mesos -f L. 

 hepar, liver), definition of 604 



MESOMERE, mess'ohmere (G. mesos, 

 middle; meros, part), definition of. . 

 460, 503, 504 



MESONEPHROS (G. mesos + nephros, 

 kidney ) , development of 503 



MESORHIUM, messor'keeum (G". 

 mesos, middle -f- orchis, testis ) , defi- 

 nition of 609, 811 



MESOSTERNUM, mes'oster'num (G. 

 mesos + L. sternum, breast bone) . .335 



MESOTHORAX, mes'otho'raks (G. 



mesos + tlioraa;, chest) 614 



The middle segment of the thoracic 

 region of insects. 



MESOTIC CARTILAGE 609 



MESOVARIA, definition of MO, 811 



MESOVARIUM, messohvay'reeum (G. 

 mesos, middle; L. ovum, egg) . .424, 431 



MESOZOA (G. mesos -f- zoe, life) 306 



Three families of parasites of un- 

 certain position. 



MESOZ01C, mes'ozo'ik (G. mesos + 



zoe) 394 



The middle or secondary group of 



rock-systems. 

 METABOLISM, metab'olizm ( G. 



metabole, change) 95 



METACARPAL, met'akar'pal ( G. meta, . . 



after; karpos, wrist) 76 



METACARPUS, definition of 708 



METACONE, met'fikon (G. meta, after 



+ konos. cone ) . 736 



The posterio-external cusp of an 



upper molar. 

 METACON1D, metTiko'nid (G. meta + 



konos + cidos, resembling) 254 



The posterio-internal cusp of a 



lower molar. 



METAGENESIS, definition of 254 



&ETAQONIMUS YOKOGAWAI 301 



METAMERE, met'amere (G. meta, 



after ; meros, part ) , definition of ... 



264, 460 



METAMORPHOSIS, met'fimor'fosTs (G. 



meta, beyond + morphe, form), 



definition of 330, 504 



Of bee 362 



Of frog 547 



METAPHASE, met'affiz (G. meta + 



phainein, to appear) i)7 



Definition of 98 



METAPLASM (G. meta -f plasm, 



something moulded), definition of.. 91 

 METAPODIUM, metTipo'dium (G. 



meta + pous, foot), definition of. . .708 

 METATARSUS, met'atnr'sus (G. meta 



+ L. tarsus, ankle), definition of. . .708 

 METATHALAMUS, met'sithal'amus (G. 



meta + thalamos, chamber), defini- 

 tion of 852 



METATHERIA, metathe'ria (G. meta, 



beyond + therion, a wild beast) ... .431 



Definition of 657 



METATHORAX (G. meta + thorax, 



chest) 335 



Posterior segment of the thorax of 



insects. 

 METATROPHIC, met'atrofik (G. 



meta + trophe, nourishment) 191 



Definition of 258 



METAZOA, metazo'a (G. meta + zoon) 



Many-celled animals. Definition of. 96 

 METRATERM, me'traterm (G. metra, 



uterus -f- L. terminus, end) 296 



METRIOR1IYXCTIU8 6S2 



MIASTORCA, mlas'torka (G. miastor, 



a guilty wretch, also avenger ) 3fj5 



TUWROCENTRVM RETINERVE 352 



MICRODRILI 421 



An order of 



