INDEX 



913 



ENTOVARIAL CANAL, en'tova'rial 

 (G. entos, within; L. ovum, egg), 

 definition of 816 



ENVELOPES, FLORAL, en'velups (F. 

 enveloppe, covering) 242 



ENVIRONMENT, environment (F. 



environ, about) 32, 157 



The sum total of the external in- 

 fluences acting on an organism. 



ENZYME, en'zim (G. en, in; zyme, 



leaven) 95, 189 



A chemical or unorganized, soluble 

 ferment. 



EPARTERIAL BRONCHI, ep'ftrterial 

 bronkl (G. epi, upon; L. arteria, 

 artery + G. bronchus, a windpipe) .770 



The first branch of the right 

 bronchus. 



EPAXIAL MUSCLES, epak'sifil (G. 

 epi, upon; L. axis, axis), definition 

 of 826 



EPENDYMA, epen'dima (G. ependyma, 

 outer garment), definition of 572 



EPHEMEROIDEA 423 



A sub-class of Pterygogenea. 



EPIBLAST, ep'Iblast (G. epi, upon; 

 blastos, bud) , definition of 106 



EPIBOLE or EPIBOLY, epib'oli (G. 

 epi, upon; lallein, to throw), defini- 

 tion of 107, 557 



EPICARDIUM, ep'ikar'dmm (G. epi, 

 upon ; kardia, heart ) , definition of . 520 



EPICOELE, ep'Icel (G. epi, upon; 

 koilos, hollow), definition of 461 



EPICORACOID, ep'ikor'akoid (G. epi, 

 upon ; korax, crow ; eidos, resem- 

 blance) 76 



Pertaining to an element, usually 

 cartilaginous, at the sternal end of 

 the coracoid in amphibians, reptiles, 

 and monotremes. 



EPICRANIUM, ep'ikranmm (G. epi, 



upon ; kranion, skull ) 334 



The region between and behind the 

 eyes in an insect's head. 



EPIDERMIS, ep'ider'mis . (G. epi, 



upon ; derma, skin ) 46, 229 



Component parts of 665 



EPIDIDYMIS, ep'idid'imls (G. epi, 

 upon; didymos, testicle), definition 

 of 284, 519, 814 



EPIGENESIS, ep'ljen'esls (G. epi, 

 upon ; gignesthai, to be born ) , defini- 

 tion of 382 



EPI-HYAL, ep'lhi'al (G. epi, upon; 



hyoeides, Y-shaped) 738 



Pertaining to the upper portion 

 of the ventral portion of the hyoid 

 arch. As a noun, the upper element 

 of the ventral portion. 



EP1MERA, epi'mera (G. epi -f meros, 

 thigh), definition of 315 



EPIMERE, ep'imer (G. epi, upon; 

 meros, part) 460 



EPIMYOCARDIUM, epl'mid'kardium 

 (G. epi -f- mys, muscle -f- kardia, . . 

 heart) , definition of 529 



EPINEPHRIN, epinef'rin (G. epi -f 

 nephros, kidney ) 823 



EPIPHARYNX, definition of 337 



EPIPHYSIS, epif'isls (G. epi, upon; 



phyein, to grow) 66, 490, 681, 852 



Of frog 45 



EPIPLOIC FORAMEN, ep'iplo'ik fora- 

 men (G. epiploon, the caul -f- L. 



foramen, an opening ) 



The opening between the bursa 

 omentalis and the large sac of the 

 peritoneum; the foramen of Winslow. 



EPIPODITE, eplp'odit (G. epi, upon; 



pous, foot) 314 



A process arising from the basal 

 joint of the crustacean limb and 

 usually extending into the gill cham- 

 ber. 



EPISTERNUM, ep'ister'nfim (G. epi, 

 upon ; sternum, breast bone ) 76 



EPISTROPHEUS, ep'Istro'feus (G. 



epistropheus, turning ) 684 



The axis vertebra. 



EPITHALAMUS, ep'ithal'amus (G. 

 epi, upon; thalamos, chamber), defi- 

 nition of 852 



EPITHELIOID BODIES, definition of .587 



EPITHELIUM, ep'ithe'lmm (G. epi, 

 upon; thele, nipple) ; surface tissue. 108 



EPITRICHIUM, ep'itrlk'ium (G. epi, 



upon ; thrix, hair ) 657 



An outer layer of the epidermis in 

 the foetus of many mammals, usually 

 shed before birth. 



EQUAL SEGMENTATION, ekwal (L. 

 aequalis, equal), definition of 106 



EQUATORIAL PLANE, e'kwator'ial 

 (L. aequalis, equal) 98 



EQUIDAE, ek'wide (L. equus + G. 

 eidos, like) .662 



EQUILIBRIUM, ORGAN OF 323, 809 



EQUISETALES, ekwiseta'lez (L. equus 



4- seta + o,les ) 223 



One of the fern allies. 



EQUI8ETUM FUNSTONT, ekwise'tum 



(L. equus -f- seta, bristle) 224 



One of the fern allies. 



ERROR, PROBABILITY OF, CHART. 20 



ERYOP8, er'iops (G. eryein, to draw 

 out -f ops, face) 082 



ERYTHROCYTES, erith'roslts (G. 



erythros, red; kytos, hollow) 56 



The red blood cells. 



ESSENTIAL ORGANS, definition of.. 228 



ETHICS . . 40 



