454 



Index 



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

 upon + didymos, testicle) 285 



EPIGENESIS, ep'ijen'esis (G. epi, 

 upon; gignesthai, to be born), defini- 

 tion of 383 



EPIMERA, epi'mera (G. epi + meros, 

 thigh ) , definition of 316 



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



phyein, to grow) 66 



Of frog 45 



EPIPLOIC FORAMEN, ep'iplo'ik fora- 

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



foramen, an opening) 



The opening between the bursa 

 omental is and the large sac of the 

 peritoneum; the foramen of Winslow. 



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



pons, foot) 315 



A process arising from the basal 

 joint of the crustacean limb and 

 usually extending into the gill cham- 

 ber. 



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

 upon; sternum, breast bone) 76 



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

 upon; thele, nipple) ; surface tissue. 109 



EQUAL SEGMENTATION, ekwal (L. 

 aequalis, equal), definition of 106 



EQUATORIAL PLANE, e'kwator'ial 

 (L. aequalis, equal) 98 



EQUILIBRIUM, ORGAN OF 323 



EQUISETALES, ekwisetaTez (L. equus 



+ seta + ales) 225 



One of the fern allies. 



EQUISETUM FUNSTONI, ekwise'tum 



(L. equus + seta, bristle) 225 



One of the fern allies. 



ERROR, PROBABILITY OF, CHART. 20 



ERYTHROCYTES, erith'rosits (G. 

 erythros, red; kytos, hollow)....,.. 56 

 The red blood cells. 



ESSENTIAL ORGANS, definition of.. 229 



ETHICS 40' 



ETIOGENOUS 



EUGENICS, ujen'iks (G. eu, well; 



genos, birth ) 163 



The science dealing with the im- 

 provement of stock, usually referred 

 to the betterment of the human race. 



EUGLENA, ugle'na ( G. eu, well ; glene, . . 



pupil of the eye) 128 



A species of Mastigophora. 



EULAM EL LI BRAN CHI A, iilameli- 

 brang'kia (L. lamella, a thin plate 



-f- G. branchiae, gills) 423 



An order of Pelecypoda. 



EURYPTERUS, urip'terus, (G. eurus, 

 wide + pteron, wing) 432 



EUSTACHIAN TUBLE, usta' kian (L. 

 Eustachi, Italian physician), defini- 

 tion of 71 



Of frog 45 



EUTHERIA, iithe'ria (G. eu, well + 



therion, a beast) 428, 434 



Definition of 434 



EUTHYNEURA, uthinu'ra (G. eythys, 



straight + neuron, nerve ) 423 



A sub-class of Gastropoda. 

 EVAGINATION, evajina'shun (L. e, 



out ; vagina, sheath) 295 



The process of unsheathing, or 

 product of this process; an out- 

 growth. 



EVAPORATION 38 



EVIDENCE FOR EVOLUTION 407 



EVOLUTION, evolu'shun (L, evol(oere, 



to unroll) 403, 414 



Cause of 413 



Convergent 414 



Course of 414 



Criteria for a satisfactory theory 



of 414 



Divergent 414 



Evidence for 407 



Evidence against 409 



Individual 31 



Racial 31 



Summary of evidence 413 



EXCRETION, ekskre'shun (L. ex, out; 



cernere, to shift) : 30 



Act of eliminating waste material, 

 or the product of the process. 



EXCRETORY SYSTEM 63 



EXOOOIPITAL, eksoksip'ital (L. ex + 



occiput, back of head) 73 



EXOCRINE GLANDS, eks'okrin (L. 



ex + G. krino, I separate) 52 



EXOGENS (L. ex, out + gigno, to re- 

 produce ) 229 



EXOPODITE, eksop'odit (G. exo, 



without; pous, foot) 315 



The outer branch of a typical bira- 

 mous crustacean limb. 

 EXOSKELETON, ek'soskeleton (G. exo, 



without; skeletos, hard) 349 



A hard supporting structure 

 secreted by the ectoderm or by the 

 skin. 

 EXPIRATION, ekspira'shun (L. ex, 



out; spirare, to breathe) 30 



EXTENSILE TONGUE 47 



EXTENSION, definition of 43, 78 



EXTERNAL EAR OF FROG, ekster'- 



nal (L. externus, outside) 45 



EXUMBRELLA, eksumbrel'a (L, ex, 



out; umbra, shade), definition of... 255 

 FABRICIUS, fabre'shus (L. fabricius, 



a German entomologist) 383 



FACIAL, fa'shal (L. fades, face) 68 



FACIOLOPSIS BUSKI 293 



FACTS, COORDINATING 40 



FACTS VS. INTERPRETATIONS. ... 33 



FAECES., fe'sez (L. faeces, dregs) 50 



The excrement or waste matter 

 from the bowels. 



