GLOSSARY. 



107 



divide). Fissiparous ; multiplying 

 by division. 



Mesenceph'alic (Gr. /uecros, mes'os, 

 middle ; syKetyaXov, enceph'alon, 

 the contents of the skull). Be- 

 longing to the middle part of the 

 brain. 



Mesenter'ic (Gr. ,ue<ros, mes'os, midst ; 

 fyrfpov, en'teron, the intestine). 

 Belonging to the mesentery. 



Mes'entery (Gr. /j.e<ros, mes'os, middle; 

 frrfpov, en'teron, an intestine). The 

 fold of membrane which attaches 

 the intestines to the spine. 



Mes'o- (Gr. ILWOS, mes'os, middle). 

 A prefix in compound words, signi- 

 fying middle. 



Mesocae'cum (Gr. juecros, mes'os, 

 middle ; Lat. caecum, a portion of 

 the large intestines). The part of 

 the peritoneum which attaches the 

 csecum. 



Mes'ocarp (Gr. /teo-oy, mes'os, middle ; 

 Kapvos, karpos, fruit). The mid- 

 dle of the three layers in fruits. 



Mesoceph'alon (Gr. fiea-os, mes'os, 

 middle; /ce^aATj, keptiale, a head). 

 A name sometimes given to the 

 pons Varolii of the brain, from its 

 position. 



Mesoco'lon(Gr. /leo-os, mes'os, middle ; 

 colon, a part of the intestines so 

 called). The portion of mesentery 

 which attaches the colon. 



Mesogas'tric (Gr. jueo-os, mes'os, mid- 

 dle ; yaffrrip, gaster, the stomach). 

 Attaching the stomach to the walls 

 of the abdomen. 



Mesono'tum (Gr. /uecros, mes'os, mid- 

 dle ; VWTOS, notos, the back). The 

 upper half of the middle segment of 

 the thorax in insects, covering in 

 the back. 



Mesophloe'um (Gr. yueo-oy, mes'os, 

 middle ; ^AOJOS, phloi'os, bark). In 

 botany, the middle layer of the bark 

 of a tree. 



Mesophyll'um (Gr. nea-os, mes'os, 

 middle ; <pv\Xov, phullon, a leaf). 

 The cellular substance of a leaf. 



Mes'ospenn (.Gr. pecros, mes'os, mid- 

 dle ; (TTrep^o, sperma, a seed). The 

 middle coat of a seed. 



Mesoster'num (Gr. /uerros, mes'os, mid- 

 dle; ffffpvov, sternon, the breast). 



The lower half of the middle seg- 

 ment of the thorax in insects. 



Mesotho'rax (Gr. pea-os, mea'os, mid- 

 dle ; 6wpa, thorax, a breast-plate). 

 The middle part of the thorax ot 

 insects, bearing the anterior pair 

 of wings and the middle pair of 

 legs. 



Mesozo'ic (Gr. /ueo-os, mes'os, middle ; 

 fay, zoe, life). A name given in 

 geology to the middle period, as 

 regards animal remains ; compre- 

 hending the cretaceous, oolitic and 

 triassic epochs. 



Met'a- (Gr. /tero, metfa, beyond). 

 A prefix in compound words, signi- 

 fying beyond. 



Metacar'pal (Gr. /uero, metfa, ^ be- 

 yond; Kapiros, karpos, the wrist). 

 Belonging to the metacarpos. 



Metacarpus (Gr. juera, met'a, ^be- 

 yond ; Kapiros, karpos, the wrist). 

 The hand between the wrist and the 

 fingers. 



Metach'ronism (Gr. pera, met'a, be- 

 yond; XP OVOS > chron'os, time). The 

 placing an event in chronology after 

 its real time. 



Metagenesis (Gr. jucra, met'a, im- 

 plying change; yewau, gennao, I 

 produce). Alternating generation ; 

 the succession of individuals, which 

 present the same form only at every 

 alternate generation ; the changes 

 of form which the representative of 

 a species undergoes in passing from 

 the egg to a perfect or more com- 

 plete state. 



Metagenet'ic (Gr. /uera, met'a, imply- 

 ing change ; ytwata, gennao, I 

 produce). Referring to the changes 

 of form undergone in passing from 

 the egg to a perfect state. 



Metalliferous (Lat. metal'lum, a 

 metal; fero, I bear). Producing 

 or yielding metals. 



Metalloid (Gr. ^Ta\\ov, metal'lon, 

 a metal ; e2Sos, eidos, form). Like 

 metal ; a name sometimes given to 

 the non-metallic elements. 



Metallurgy (Gr. ^ra\\ov, metal'lon, 

 a metal ; tpyov, ergon, work). 

 The art of working metals ; 

 especially separating them from 

 their ores. 



